Hi, I got an idea.
It would be nice to introduce a pvp message chatline somewhere down in the bottom of the screen. First of all, Kong chat is quite often down, moreover this will be usable for pvp chat during the particular game that shouldn't bother other players.
edit:
Another one! It'll be great if you could somehow introduce a tournament system, preferably something like 8-mens queue similar to MODO, or anything like that. It shouldn't be a real tournament with timetables and such stuff, but rather a free mix of players entering the "arena" one after another, forming an ad hoc "tourney" of whomsoever was the 1st to 8th participant.
Round results being collected would serve for the final result based simply on standings after four rounds, with some kind of a prize structure (say G-pack for finalists, lesser packs for others) and also some gold reward based on level (actually this should be givan to the beginners, to increase their progress, motivation, etc.) The daily limit for 8men queues might be or might not be intorduced (to limit farming and to not turn this into another job), or at least the daily pvp-toruney reward should be very low, say one 8-mens played.