Buckle up and grab some popcorn, cuz diz gonna be good!
I wanted to quote bunch of people and reply individually, and I have been putting this off forever too, but I am just going to reply with a single comment. The biggest problem I see with so many people's way of thinking here is, is that they are STUCK in the mindset of two decade old mmo design. When you think about PvP, you can't think about anything else but low level characters getting ganked by high level characters. Because that is how it is been in mmo games for over two decades, so that is how you think.
Why? Why can't you think outside the box?
Don't compare this game to WoW, this game is not WoW, its not even close to tab targeting, stat based, dice rolling 100% of mmorps on the market. Of course those games can't do PvP and PvE together, because their mechanics are so shit, its impossible. It is impossible if you have insane power differences due to vertical progression, random generated damage, dodges and blocks, and no skill tab targeting. Their devs have to come up with bunch of elaborate band aid solutions to make it work a little bit the best they can with what they got.
Otherwise you got no games to compare to here. You can't say oh hey it didn't work in this game or that game, because there are no freaking games that ever done this... FireFall was the only one that tried and it failed because it went back to the shitty mmo standard. There are no other games, just like there are no other games that do horizontal progression shooter in massive world with PvE. None. So don't judge something based on no experience, and just because you THINK it won't work because 1) you don't like PvP and 2) WoW has hard time balancing it. Seriously.
Ember shouldn't have problem of standard mmos, because it will not be a standard mmo. If anything it will be similar to Planetside or Battlefield, except in larger map with more players and PvE. This game as shooter game first. What problems do shooters have with PvP and PvE balance? They don't. Because things are skill based, the health pools and damages are set and precise, and the skill the priority. DICE can add monsters to Battlefield games, and it would work flawlessly without hindrance. LEFT4DEAD can add PvP to their game, and nothing would effected in PvE. Because shooters with horizontal progression are set up so the balance is already there, you just pick your minimums and maximums for how powerful some aspects are and that's about it.
Ember will already have that, and the effort to add PvP to the gameplay is minimal compared to anything else on the market. We had PvP balance in FireFall, which worked for the longest time, I was there, I have played it. To this day the only reason that it was separated that I know off, is that PvE players felt underwhelmed with the PvP balance. Why? Why they felt that way? Because the problem I have addressed in the first paragraph of this replay. They were stuck in 20 years of mmo mentality, that taught them that you HAVE to get insanely powerful, you have to have huge damage, and make huge effects, if you weren't AoEing hundred monsters around the thumper at once with some insane skill, you are nothing. This is cliche standard ass typical mmo vertical progression way of thinking.
Shooter player don't have problem with that. I have played shooter games for over 20 years of my life, and if they taught me anything, as long as I shoot something in the face and I can kill it, its great. I don't need huge damage, or effects or insane abilities that turn enemies into trivial experience. I want efficiency and challenge. In Battlefield, when you are level one and shoot highest level player with your beginner pistol, he dies... because that's how it works, and its not the amount of your high level gun that kills, its your ability to properly aim it toward proper target while also avoiding damage via movement, or abilities. I feel like this is what Ember probably will be aiming for as shooter with horizontal progression.
So mixing PvP and PvE, is not impossible, and its not damaging to the experiences of the PvP or PvE players, but it certainly damaging to the broken mmo mentality, which will be tested again as Ember's development will begin. I guarantee you there will be people bitching how they don't feel powerful and when will we be expecting more powerful items... It's gonna happen, PvP or not.
Anyways, this is getting pretty long and ranty, so I will just wrap this up with couplet important points:
When I say "Open world PvP", It don't mean "Anyone can kill anyone else anywhere". Seriously, please, get that shit out of your mind. When I say "Open world PvP", I mean you can engage in PvP using whole or most of the world, WHO YOU FIGHT is a different question. I can be clan vs clan, it can be flagging system, or whatever else, but the point is, depending on how it is implemented, the people who don't want anything to do with PvP will not be affected by PvP (other than actually seeing people fight each other). I don't understand why people can't get this. Its not going to freaking effect your experience with the game, other than maybe giving you more options down the road if you decide to try it. I know that if anyone is allowed to just shoot anyone in the game without restrictions, the game will be complete shit, I know that and I like PvP, nobody in their right mind would ask for something like that and expect the game to be good. This just boggles my mind that people can't expend their thought process baynd that, its like everyone got freaking PTSD from shitty mmos they have played in the past and just can't move on to thinking better about possible ways on how to improve something like this.
I just gonna tag
@Grummz here so he might take a look at this whenever he gets a chance. Seriously man, don't drop the idea of PvP like its nothing, you know better, its huge part of gaming world, it is important. And if PvP might make it into the Ember someday, don't make it a shitty arena, please, just don't. Let us kill our friends and rival clanmates in the world, it will be cheaper than making the arena anyway. When you started FireFall you had huge plans for PvP, and yeah things change and didn't work out as planned, but this time around we don't need Esport quality, we don't need all the fuss and cool things, start small and see where it goes. But it is crucial to start somewhere in the beginning, it will make things much easier later down the road.
I came to FireFall because it was Shooter in open world, it had horizontal progression, and PvP. Truly unique. If Ember will not have PvP, that's fair enough, whatever game you gonna make, you do it. But without PvP, it loses so much of the uniqueness in it, its almost like no point, because in PvE, who cares how op you are? Plus its going to get boring, just like Warframe, its good, but its boring, its same old same old. PvP gets boring too, yep, but combination of both is a different story.
So yeah, here is that, I hate writing so much, maybe I should publish this as a book sometime.
edit: there are bunch of typos, but I don't have time to fix that now, sorry!