Sure, bring Trinity back.
I think this map would work fine with the current reduced player numbers. In particular, you avoid cross-mountain bomb runs by creating a "beachhead", either at the mountain border, or on the coast. This is possible, as it occurs all the time on current maps. Furthermore, the high altitude mountains aren't all bad, as they provided a place where high altitude fighters could shine, and you couldn't always avoid combat by diving for safety. This latter is of course what happens on the other maps.
A lot of people, including me, also liked the GV battles. Although CraterMA also provides a popular GV venue, it is usually gone in less than a day. Not a problem with Trinity.
MH