One of the reasons I prefer UT2004 movement over the current movement in this new UT is that you don't have to spam dodge nearly as much to move from point A to point B with UT2004 dodge-jump. I don't think they should change it to UT2004 movement, there's already a very good game with that flavour of UT-movement. UT-dodging works great for combat but it's not fun to spam for moving long distances, Quake-style strafe jumping is the most enjoyable movement system I've tried in FPS games for moving long distances.
I played an MMORPG called Black Desert Online a while back and that game has interesting action combat with double-tap dodging and slides similar to UT. BDO also has different movement options and attacks you trigger by tapping certain keycombos, similar to how it works in fighting games like Street Fighter. Playing that game got me thinking about the possibility of implementing special moves that require certain keycombos to execute in UT, I mean UT is already a game for keymashers so it fits in I think. You could have a limited resource required for some special moves, like in BDO and Street Fighter where you have limited energy/combo meter, that prevents players from overusing them. As an example you could have keycombos for a fast sprint, a fast slide with movement control after a dodge or a extra high jump after a slide. The goal is to make movement outside of combat less repetitive, more enjoyable and interesting to master. There's also a lot of options for special moves to make in close combat but I feel like UT's movement already works well in combat.
If anyone wants to try the movement in BDO it's free to play for 7 days I believe, I recommend the Berserker class since it has the most interesting movement combos in my opinion :]