I would also like to point something out. You can't speak for people if you never asked them for their opinion. I was a fan of FireFall and played it for years (I even joined the mentor program). But I'm also a big mecha fan I love things like the Armored Core game series, the Gundam series, and many more. I just love sci-fi. So you can't say something like "FireFall fans don't like mecha" but that statement is false. Plus the battleframes in FireFall also count as mecha because they are a type of exoskeleton. And exoskeleton can come in many different sharps and sizes as long as they act like an extension of your body.
It is ok not to like something and it is ok to say that you don't like something. But your first line of thinking should be looking for ways to compromise rather than flat rejecting it. For example, I hate that a lot of weapons in sci-fi games have recoil when there is no reason or need for them to have recoil, but I do also point out things that can be used in place of recoil that would make sense for how different weapons are designed and work. Your goal should be finding solutions you can work with, without changing the feel and the goal of the game itself.
It is ok not to like something and it is ok to say that you don't like something. But your first line of thinking should be looking for ways to compromise rather than flat rejecting it. For example, I hate that a lot of weapons in sci-fi games have recoil when there is no reason or need for them to have recoil, but I do also point out things that can be used in place of recoil that would make sense for how different weapons are designed and work. Your goal should be finding solutions you can work with, without changing the feel and the goal of the game itself.