I have to agree with the OP on this. These giant lump patches are no reason to withhold EVERY major change created for the game.
As several people have already posted there's no reason a right-click blist option couldn't have been added in the 2.05 hotfix or one of the many planned Monday night maintenances.
Then there's the thought: if the dev make some big breakthrough on a major bug like that nasty 0.3 lag or get some high coveted QoL feature like Vanity Slots 100% up and running, will they really just leave them digitally shelved for months until the "next big patch"? That just doesn't make any sense.