1. I really think you should be limited in traveling over the middle rooftop to cross over the base. That just allows someone to circumvent the majority of the map. The roof could be built up and given some clipping so it's not passable that way. Or give a semi-transparent roof, like some criss-cross bamboo as a barrier.
2. I see a lot of players get confused about where to go. Most people laser jump up to the second level (where the flag rooms ar), but there isn't a clear way up to that level without laser jumping (I know there are two stairways leading up, but those aren't obvious and they are at the far ends of the hallways). So a lot of players just run around and play DM in the middle of the map.
hmm, a followup point, though this isn't that important and doesn't deserve a number
is that there may be too much armor on this map, or at least too concentrated. Usually, if someone gets one armor, they get both and then they are pretty stacked.