The game will just be a spot for people to come, waste time, and meet new people.
Whoa, now we're talking Habbo Hotel!
Har har har.*
I'm not a MMORPG guy, myself, and to top that off I also think a MMORPGuh needs to be killer if it wants ANY sort of chance at all. I was considering chiming in with a "Save yourself! Make a regular RPG!" post. Because lonely MMO's seem so very sad to me.
However, on further thought, we're indies. We have one agenda - our own. We make what we want to play, and our audience finds us. If it's weird, and niche, and off the wall, so be it. If it's normal, and similar, but fun and comfortable, so be it. You seem to see the risks, the problems and the potential shortfalls. After all this, you don't care, because, hell, you want a nice, simple MMO with a small, loyal audience. I say go for it.
*I really dig the Habbo artist's other stuff, though. And, to be fair, I played it for one day years and years ago simply for the crisp Iso styles. And still remember it.