I mean the heavy got to feel nice and heavy otherwise it wont feel heavy o.o
Hope it is not too slow though... not that i know much on balancing, i am sure they will all have a unique feel between the 3 frames.
Thinking about it could all depend on how we customize our frame, i mean you could make a quick heavy with the right setup might not be as armored i'd imagine hmm
That's definitely something we've discussed before. The lightest frame, the Sly-Dancer ought to be able to carry either two or three "light" weapons or just one heavy or medium one. DERAIL WARNING!
Also, let's remember, that compared to the proportions of our human character, even the lightest of frame weapons would be sizable and too heavy to carry for a human. Maybe the buffest of bastards could carry a "light" frame firearm and be able to pull its trigger to effectively utilize it for combat, barring any other option, in a dire situation. But, I wouldn't necessarily want to see that implemented in-game, only in the novels and maybe the in-game journals, logs and war-stories we could find, either written by or about some bad-ass NPCs and other characters we would only hear of in writings and recordings.
Each weapon, forearm/wrist-mounted or carried in the frame's hand, will add to our weight until it is at max capacity, which will differ between the three frames, of course.
Forearm/wrist-mounted weaponry, both ranged and melee, could perhaps weigh a little less, for less of an impact on e.g.: mobility or cooldowns, since the frame's hands would be empty, making for easier movement. Trade-offs or advantages could be in their accuracy, durability, overheating, mag-size, weapon-swap speed...etc.
Perhaps bladed weapons for frames should only come in wrist/forearm-mounted varieties, with the exception of possible polearms, pikes, javelins or halberds, but the addition and animation and balancing of those (for weight, speed, reach) might be really too much to ask for.
Naturally, depending on their weight-class, the frames could carry a variety of different loadouts, mixing light, medium and heavy weaponry, as their carry-weight capacity would allow, making for a number of combinations.
And weapons could be a mix of melee and ranged, with one mandatory ranged-weapon, even if it is of the lightest class, to leave 'weight-room' for melee builds that would only use the ranged weapon to strip enemies of shields, before they'd close in to slice and dice or bash with hammers, if they prefer to inflict blunt force trauma.
The following loadouts DO NOT include shoulder or outer-thigh-mounted rocket pods (an offensive ability), grenade-launchers (limited consumables that include smokescreens/EMPs...etc.), harpoons (a debuff ability that could drain a target's energy, slow their movement, trap them, anchor them with different effects) and so on, things that would be tied to abilities with a cooldown, not counting the grapple, which won't have a cooldown, I'm guessing.
So a Light-Frame could carry two identical (or two different) light-swords for dual-wielding and have a back-up light-firearm for ranged combat. Or two/twin light SMGs, with a light melee weapon. One medium ranged-weapon with a light-sword. Or a medium melee-weapon with a light ranged one. Or one light ranged and one medium ranged-weapon...and so on.
(!) So a Heavy-Frame can be decked out with an arsenal of light-weapons that would max out its weight-limit, reducing it's movement speed to the slowest possible, in exchange for some serious versatility. (e.g.: 4 SMGs!? It would be like a walking, running, jumping, gliding quad-cannon.)
Animation and lore-wise the carried (and not wrist/forearm-mounted) weapons could be magnetically attached to our frame's thighs or side or even the back, if it will be able to bend its arms that way. Similarly to the way weapons are carried in the Mass Effect games.
And that's just the weapons. I haven't gotten into any detail about armor-plating and how that could effect weight, depending on the level of protection and base-weight-class of the frame, which would determine how much plating it could have.
END OF DERAIL
Sorry! Pretty much almost all of this had been discussed before.