Those Guild suggestions are nice, but what really needs to be fixed is the Guild list showing members only when it feels like doing it. Kinda annoying logging on, you know your other guildies are on, but the Guild window only shows you. Also the ability to right-click members in the guild pane, either to invite or whisper is needed.
I know Mr Reid posted about priority for LFG Tool and ppl have posted against and for it. In the interim, can you either do what RIFT did and make level specific channels, or make a Server Wide LFG Channel?
UI change/suggestions:
http://www.swtor.com/community/showthread.php?p=888245&posted=1#post888245