Well I think its a good idea with a potentially big snackable market to go after considering the number of MMORPG's out there.
Looks like you have a ton of data in the app, hence the busy/clutter feel you get. Is all that data put in by hand, ie- i just won The Rock Uberness +12 killing to Bats, and I put it in the app, indicate how much dkp it cost, who i was with etc.
I'd almost rather see your app as an app in facebook where they do the hard work in providing the platform for communication/connectedness and you focus on all the bit elements around it.
If all this data goes in by hand and i suspect is does, the feeling of work overcomes me but i'm no the hardcore raider. Hardcore fanboys will probably dig it but they want some sex in the app bad. The RiotACT feels sexy but feels stuck as well.
I think you need to take 10 steps back, breathe, sit down with 5 different types of users, the noob that just joined the guild, the guy thats been there awhile, the crazy rabid collect everything on the planet girl, PVP master dude X that likes to hurt people and the guy/girl who started the guild in the first place. Talk simple flows outloud without looking at anything. Then go back to your app and figure out a way to REMOVE 50% of what you see. Refine, present it to those 5 peeps and go from there.