I get the feeling you guys are the ones who are getting a bit too excited.
About your project, I mean.
Listen. You can't plan to make a game that has everything in it. That's just impossible.
From FPS to third-person to RTS? Even only ONE of those genres is awfully hard to make. Now not only do you want to do all three (maybe more) of them, but you also have to mash them up together so that they behave correctly with each other, don't glitch out, are relevant to the other mechanics in the game, are aesthetically pleasing, and are all interesting... Just no.
And that's not all.
Aside from the technical prowesses that would require, a game that is merely a mix of every other game just isn't going to be interesting. There are good games out there that are huge references to already existing stuff (Abobo's Big Adventure to say the least) but they all have their own interesting features. You can't just take the story from Pokemon, the battle system(s!) like WoW or Zelda, etc, and expect to be congratulated for having made your "own" game.
Want more?
You can't just decide to make a game by saying "Hey I'm gonna make a game!" without knowing anything about storytelling, game design, level design, programming, music, graphics, production, marketing, project management, and so on. I'm not saying all of those are mandatory (I am totally unskilled in like half of them) but the way you sold your fetus of an idea tells me you obviously have no idea what you're talking about. At least before making any kind of thread/announcement about it, try to have some actual content.
I don't know, like a synopsis, some characters, some art, or some even basic idea of what genre your game will be. Don't just say random stuff like "Ok we're gonna use this story, or wait maybe this one, or wait..." and "We're going to have a Cave Story DLC with the Polar Star!" when you don't have the slightest idea of whatthe finished product is even supposed to look like.
Will it be a platformer? A shoot'em-up? A shooter? A fighting game? A hack'n'slash? A FPS? A RTS? A puzzle game?
Will it be sci-fi? Fantasy? Realistic? Medieval?
How will be the hero? What will they do? Where? When? How? Why? With what and whom? Against what and whom?
Will it be 2D? 3D? 8-bit style? More detailed? Lots of colours? Black and white? Realistic?
Will it be fast-paced? Slow-paced?
Easy? Hard? Modular?
Procedurally-generated? Labyrinthic? Straight-forward?
Those are the kind of questions you are supposed to ask yourselves, and actually answer to, before even thinking of talking about your game. Because before that, it's not a game. It's just a sterile idea. Maybe not even an idea, just a thought or an envy.
And that's not even all. If you know what you want, and what you want is the next big thing with Realismax(C) physics engine, dolby-surround digital sound and 3D HolyShit(tm) graphics, don't even think about it. You should know why hundreds of people are working on those. Because they are a fucking pain to make.
Also, don't just pick a random technology (especially Unity) if you don't know how to use it or how to do even the most basic things with a programming language or a game making tool. Making games isn't just some kid's joke you can learn and do in five hours straight. It takes a lot of time and skill to do those, and that's pretty much why there aren't a lot of successful game makers out there.
I hope you won't be too offended by what I've written, because it was not the point.
I also hope you see, understand and accept my point.
Finally, I hope you will think about your mistakes and keep working on realizing your dreams, just more seriously. For your sake.
If you have read everything, thank you and good luck.