Frigate could be awesome, if the playable part of the map would not be restricted to the ship only, like it does is in the movie (it's mounted).
So on the ship, in the 'halways' it would feature the gameplay of train. On both roofs of both sides (if you make it) you get the gameplay of the Unreal Tournament map of that flying rock with two sniper towers. Then you have the water part, for you own interpretation pleasures, and the dock.
If this is done right, ge_frigate could become an intense and uber MP map, but if this is not done to complete perfection it could instantly suck because of the huge lack of space to move in, so it must be de-cluttered and at the same time be true to the feel of ge64_frigate!