Base capture can have a place in the arena. It is a different dynamic than the MA.
One problem is that there is a limited population and sometimes there isn't enough opposition.
My squad has been known to do captures even against no opposition for practice, we are carefull not to run the map and sometimes switch sides and capture the other way to make sure it stays even.
Even so, a wide variety of scenarios will be run, some will have capture as an objective, some won't, sometimes C-47's will be enabled, sometimes only vehicle troop transports will be enabled to stimulate some GV action.
Sometimes only LVT troop transport will be enabled, but on most set-ups capture will be possible.
Keep in mind that the AvA is a tough crowd pleaser, any set-up that someone will like is bound to be a point of contention to someone else.
There is basically nothing that hasn't been tried in the past.
It's just a question of continuing to try and re-try things to find that magic combo, that brings the arena to life, and sustains that interest for more than a week or so, if there is such a combo.
I believe that the arena cannot find sustained success as a fur ball only arena with historical plane sets, and am a strong proponent of some sort of objective based play, but finding the right way to do this is much harder than you would think.
New set-ups are being created, and the set-ups rotate every week. It's a great place to make a home.
Tuesday nights we get some good 10 vs 10 or more battles going, other nights we get some decent numbers as well.
Sometimes you can even find playable numbers in the afternoon, Iv'e had some great times on Mondays and Wednesdays with daytime and Euro based players.
There are a lot of creative juices flowing right now. Stick around, you are bound to see some cool things.