I've been playing sins since launch and I have to say that barring all of the balancing,  content,  lack of campaign and other technical issues discussed,  I have seen precious little concern over the actual ICO interface and specifically its lack of channel management.

This is a major problem.  Why is there no option to simply open as many channels as I need to in order to properly converse between rooms?  I cannot imagine a reason why at least 2 channels (including a user list in each) should not be available at all times via tabs.  This would improve the experience of recruiting new players to games 1000%.  As it stands now,  you must change to another channel out of your game channel, recruit, run back, repeat.  This mean you miss any messages in which ever room you are not currently in.  Also,  when you change to another channel while in a game lobby,  you cant see any of the users in the other channel.  This again could be easily solved with a tabbed interface.

Maybe I'm missing something,  but it seems pretty frustrating the way its laid out right now,  and considering this is the very first impression a lot of people will get of sins, it should be a fairly high priority to get it right.