Two things:
One: a muscal/sound cue to know your game has finished installing the rest of the game would be greatly appreciated.
Two: After every update there is a time where no knight can get on and try it out because everyone is trying to install from the same server. maybe having some PtP information sharing to help players instal faster would help. like if someone is playing the game their game can send some data to other people instead of just from the cloud that holds spiral knights, sort of like torrenting.
Three: Make the updater stop freezing at random points during the update and then just staying there forever.
Four: Make the game update through Steam instead of me having to boot the game only to find it's updating when I want to play.