I'd much rather the housing to not be instanced. There is a lot - A LOT - of spare space in the game to add buildings and houses to. The same goes for Guild housing. It would surely make the trips from Uldah to the Docks a more interesting experience... watching players go on their way, guild members lining up for a meeting, crafters at their houses, builders, people hanging out.

But yes, I support linkshell halls and kicking offline players.