People aren't hanging out in their housing, unless a static has chosen someone's house as a gathering point because they want to avoid crowds.

They're hanging out in Limsa, Gridania and Ul'dah as they usually do.

If the bonus is as inconsequential as you say, it's not going to get anyone to hang out at the raid entrance any more than they already do.

it really make the open world feel more lively when the raid entrance is in an out of the way location that no one goes to except to enter the raid not to mention the SB, ShB and EW raids have their own separate lobbies that players have to go through to get to the entrance.

Players who want the world to feel like a lively place do hunts, going from world to world for the next train or S rank.

If all raiders are doing is waiting for their party to fill or everyone in their static to get online, they're better off doing it where players are already hanging out and not at the raid entrance.