WOW EPIC!! You pissed off a lot of UT players with the UT3 debacle. A game that has serious flaws which were fixable, but we're not. You should of remembered how you handled UT2003 > UT2004. (UT2003 has minor issues but was not loved. UT2004 fixed almost everything and far more fun).
You could have released UT4 back in 2009/2010 with the corrections below and people would be playing it today, rather than UT2004 such as myself.
UT3 has a great game engine, its stable, smooth... but a disappointment, and frustrating (not fun). An important example was the VEHICLES. In UT2004, the MOUSE wheel allowed the player to ZOOM IN (cock pit POV) or ZOOM OUT to a wide view to see your VEHICLE and the world around it. But in UT3, this function was not USED! Instead, your vehicle sucked up 1/3 of the screen! You couldn't see what you were shooting at with a Raptor. One of the IMPORTANT features of UT3 was the hooverboard in which players COULD hitch a ride behind a Vehicle - being pulled... even in the air. BUT since your Raptor (Jet fighter) filled up the screen, you COULD NOT see if you had hitchhikers or see if they were trying to grab on... or if they fell off, etc. UGH
Someone made a 16K mod, which RESTORED this zoom function, that even worked better than UT2004! A 16K file made the game *FUN*... but since its a mod and not standard with UT3, only a few servers used it. Empty servers = death.
So, the faults of UT3:
1 - The Menu UI sucked. Worse ever! Console based. Still prefer UT99 the best... but UT2004 style is acceptable.
2 - VEHICLE ZOOM, the lack of. This is a MUST feature.
3 - MAPS - only came with about 35 maps for 5 game types... in which only about 10 were any good... so we got BORED before gamers made good maps.
(Maps with Vehicles require a bit more space to move)
4 - MAPS part2: Make it like UT2004. When people buy the DVD or blu-ray disc, it comes with at least 100 maps!
5 - Dump WAR, get back the original ONS. The orbs, they were a good and bad thing... more bad than good.
6 - Bring back Assault.
7 - Requiring Gamespy to log-on and save your settings = SUCK ASS. PS: Gamespy is dead.
8 - Saving custom maps is a BITCH compare to UT2004. Things were way more complicated than they should ever be. Include a Cache>Map converter tool to manage the maps. Make so the user can't accidentally uninstall core maps.
9 - UT is a Tournament. Not a personal war... it was weak and lame.
10 - some of the Alien vehicles sucked... simply not needed. Still should have the WALKER. But the rest... Meh.
That's about it.
So: Make it more like UT2004, but even easier to add MAPS, manage maps and servers, download content. If possible, make it handle 64 humans.
(Map servers) ie: no fake populated servers. Include lots of maps to start with.
Make it FUN to PLAY. I can honestly say, I am EXCITED by the direction EPIC is going... I've been BUYING Unreal since the first game.