I could not disagree more. Adding more diversity is always a good thing in my opinion. Having more diverse costume pieces, weapons, tailored NPCs and assets for base building opens up a whole lot more creativity for character concepts and themes.
As for it being a huge undertaking, yes we already know. The OP acknowledges and reiterated as much and is correct the majority of suggestions being made in this forum are "wishes" and more than likely will never be implemented. I understood the Homecoming staff to want to hear our ideas as well, no matter how crazy. It is nice for us to be able to dream and share ideas here even though they may never be implemented. It should go without saying that in the current environment, most suggestions are simply not feasible.
I personally love this idea.