At first I've found the maps lack of weapons to be the main problem (2x pg, 2x gl!), but having for example lg+sg+50 armor makes you really invincible and that's an important control element on the map. It's fun to run around like that in pickup.
I find it more problematic that there isn't really a very advantaged point to hold, or to go to after you pick up one of the powerups. The circle-ish layout, overly balanced "sides" are actually the problem on the map. Movement, fights happen randomly.
I agree with T1e about the advantaged area, here are some solutions. I really like 2.1, but I would need to convince akm as well as sync that this is the shit! ;D
So far it's just a vote, I'm note saying there should be a RG.
One of the issue imo is that there is no strong side, therefore I'd add a MH which would result in moving the LG to open up the map, else all action would be on 'one' area: RA/MH/LG.
Fixing the geometry is nothing that can be done I'm affraid, although I'm not even exactly sure what you mean by saying that.
Why does it need to have a strong side? Limbus doesn't and it works (edit: actually it was changed after release to make the sides more equal). And reminiscent of Limbus, AC was about stealing stuff from enemy side while maintaining control of yours, whichever your side was currently.
Other maps that have strong side are Tornado and Terminatria, check their popularity ;)
The map's geometry has one major problem which is its very flat layout. Awfully flat. Only LG YA and RA JP have two layers at all (!), but you never really fight between the layers in those places. Now compare that to a simple RA room on Dreadful Place, where you have fights in so many angles it makes your head spin. And the construction is 100x simpler than any room of AC.
Which brings us to what I disliked personally and that's a set of minor problems: necessity to fit into all those small windows, or catch all those small ledges to move around, and of course the silly door that can't be shot open. Quakers like to move around and really hate hitting walls all the time.
And it's not like all of those windows and ledges are the only possible way to provide choke points, or defense against spam, or slow down certain roots. Corners, doors and jump pads still work just fine :)
maybe teleporters somewhere to change the flow. Try to find a demo of 1 team raping the other team, but both not having any super star aimers on it and ask why they got raped.