I played early Sunday evening when the population was low and struggled to get good games going, which led to the pop staying low. Out of about 5 rounds, only one was decent. Here is some feedback on particular maps and suggestions:

Jabal Al Burj:

Currently 5 flags even on lop pop (12 players on sunday night).
This, together with the inordinately long flag-cap times and lond distances between the flags led to a dire round.

(This, and the fact that our opponents refused to fight over just a couple of flags, leading to tiresome whack-a-molality)

Suggestion: reinstate AAS for low pops (~12) on this map, at least for the short term. (if it is possible to do this for an individual map)

Vanilla Maps:

A couple of the Chinese Vanilla maps came up.
These were 32-player size on a pop of ~10. The problem of having such large maps is compounded by having both UCB's cap-able. Jets and attack choppers were available too, which in my opinion is inappropriate for such low pops.
Suggestion: have 16-player sized maps on low pops, and/or reinstate UBS's to their uncapable status.

On the bright side, we had a good round on one of the PRM maps, I forget the name but it had a warehouse and train staion, 4 flags arranged in a square. This map was appropriate for the number of players and for Conquest.

[AAR My squad: Lt.Waters, Freno, eFlight, Gahlas, Pope managed to contain the MEC into the warehouse, denying them the other three flags. Waters was sniping from a good position and alerted us to enemy movements, Freno gunned down everything in sight and eFlight and Gahlas saw off any attempts that they made to sneak around the north.
Memorable moment, someone (eflight?) demanding : "We have the Warehouse surrounded! Surrender your WMD!" in global chat.
Followed by threats to send in Hans Blix
/AAR]

Well, I have faith we can get things to work well on PRM with low pop. It's frustrating when trying to seed the server to see many good players go because the gameplay is bad.