So I don't want to get mean on you, but that's more like a "how dare they to do something with the game I love" than a reasonable explanation.
The Fighting Elements of the KotoR RPG have never felt like one of its core features. The core features, what made KotOR live and breathe was always its story, the world and the characters in that world. The fighting aspects never created much immersion into this world for me, they felt mock up, extremely easy to play around with, once understood. Building in a FPS with a Dark Messiah of M%M melee combat system would create more immersion for me, at least when it is well made then the original combat system ever could. But you don't need to be afraid, they already said that they don't plan to use FPS real time combat, but tactical/pausable 3rd or fps combat, how you want to choose. The seen FPS parts are mostly because they don't have done models and thus keep sitting either with the standard engine 3D player model or stay in fps.
For me this sounds more like a act of spoiled people. You are angry about their design philosophy because they don't praise the gods of old KotoR, but do a lot like they want (or they want to do it, their last development stream I caught showed, that they aren't even 1% done). But neither if they finish or how they finish, they wont take your game away, they wont take your players away or modders or the work of the great modders.
When people see this "remake" (or rebirth or whatever they or you or me want to call it) and see that it will not come out before Lucifer's return, they might just want to recheck out KotoR, search for the old game they either never played or played long ago, they want also to check out mods, land here, start loving the mods and game. When you are afraid of people that get "parasited" by that very project, I cannot follow you. It will always sound like a "how dare they to take whats ours".
The game is over 10 years old. Modernizing the game also in the field of play-style is for me nothing bad. Maybe it is just me not having nostalgic feelings and be open to "new development", but it could be much worse. Even when you are totally against this just because of a reason I cannot understand, you still have the save feeling, that only 1 of 10.000 of these kinds of mod projects survive their first year. It could be worse, it could be EA saying they are doing a reboot of KotOR. And that would finish. And that would come out.