I like Trinity.
The reasons that a quick reset cannot be achieved in Trinity is that 1) it's a large map, 2) as Inn suggested, there are still "bottle neck" spots on the map where many people just clog up the skies, 3) the fields are placed out pretty far.
But also, another reason is that good strategic operations are available in a layout like in Trinity. Past experiences have shown us that the South country of Trinity is likely to be reset by the North West, while the North East and South stay in a stale mate condition.. but this past week, the Rooks have been concentrating on a lot of strategic porking against the Knits, and managed to defend the west coast with minimal possible numbers, in most occasions.
Thus, what has transpired is multiple stagnant(but fun!) battles spread out equally along the entire West coast, from the deepest port areas to the center areas, where equal number of planes slug it out for local air superiority. Both sides put in lots of bombers and jabos to disable the other's strategical capabilities, and because of the field layouts, a successful porking mission really shines and pays off. Also, the distance of the field ensures that no 1~2 bozos who just lawn-dart to the ground, re-up and do it again, will keep a field down. Steady numbers have to be deployed to pork a field, and the balance between pure "A2A" fighters and "A2G" fighters were visible in the Knit-Rook(NW vs S) front.
Thus, it's easy to capture one field, but keeping it alive and running, and gaining a "real foothold" in enemy territory is hard. You can't just barge in with humongous number of fighters in one area and push forward with raw force in Trinity, because the layouts and strats, zones prevent that type of display of raw, dumb power.
Actually, Trinity is the first map that I found out that the Rooks don't whine and feel discomfort and frustratrion because of numbers imbalance(as much as 30 to 50 people disadvantages I've seen, and yet not a single whine on the country channel! Ofcourse, with all the newbies in the game, there were also quite many times we were the most advantageous, too!)...

.. the meisters of defense as we are

, a lot of terrific battles have been going on on the west coast. Good numbers of fighters and jabos, ground vehicles, all spread throughout the west coast!
....
However, the Bish-Rook front(NE vs S), was an entirely different story. It was the same type of great, large furballs with no real worth whatsoever, as the battle lines just froze near the center mountain region. There was that 'bottle neck', which people clogged up hastily, and absolute chaos.
I haven't quite found out the reasons why the two fronts(Knit-Rook and Bish-Rook) so differ, maybe its in the small difference of port/CV positions, size of the seas, or field placement.... or maybe the effect of the mountain..?? .. but as it is, I mainly fought on the western front. It's simply a blast!