I have seen Shield Doors used as combat-blockers in Sky-Bubble maps, to block off weapon fire, but not sight lines. The Shield Doors would be out...
On my map Correlation [previously known as Atrophy], I'm stumped. I merged the bases a single wall's width underneath the ground, and I don't know...
The room w/ the Rockets looks pretty campable... Otherwise it looks pretty good, but it needs more entrances to the rooms. It seems very straight...