So I think it's pretty obvious now how the player housing will work in GTA online, with instanced apartments for each player, so if 2 players own the same property, the interior will be unique for each player even if its the same building/house/etc.
One problem I see with that though is, what if there's conflict between those 2 players, they bring in their crews to battle it out or whatever and want to plan at the apartment or hang out before attacking the other crew but as soon as both crews exit the apartment they are all right there in each others face, no ambushing (probably camping but that's totally different) or surprise attacks, no convoys headed to to the other crews HQ, just a big clusterphuck outside the instanced apartment that happens to be owned by 2 members of opposite crews.
Maybe I'm wrong but that would take some of the fun out of crew vs crew or gang vs gang fights in free roam if both crews happen to be based at the same apartment building and as soon as its time to fight it out all they do is exit the instanced house.
opinions?