ANY adversarial game + Full Consent = Yeah, no.
Not saying this game will fail, or anything like that -- but Full Consent, as mentioned before, has been used by too many assholes for assholish reasons for me to want to be anywhere near there.
Shit happens in RPGs. You don't always win. You kinda consent to those two things happening by signing up for a mu*, MMO, or tabletop RPG, IMO shrug
Good luck, tho.
I honestly don't see the need in a large grid anymore -- especially when most mu*s are small. I'm honestly wondering if you can get away with (today) having basic RP-rooms that can be anywhere on the grid, so to speak, and then having an actual grid with just the 'highlights' of the area (so to speak). That's not counting private rooms, naturally, but there's no reason that 'My apartment', so to speak, has to be tied to a floor grid-space, then a building grid-space, then a street grid-space, and so on.
Even on places with tons of players, and tons of gridspace (coughShangrila*cough), people don't use most of it. Why build things that people aren't going to be using in the first place?
(Caveat: I'm not currently RPing on any game at all, so my opinion means whatever you want it to mean)