Judging by the minimap I can see all players are near tiberium..good
The player to the SW corner though might have an advantage, as he's on an island with only 1 front, and if he wanted to could destroy the bridge and be difficult to get to
Cliffs are a little repetitive, evidence of pure cliff-painterage, to diversify it's good to use the custom cliffs every now and then
terrain is good, has lots of slopes, not all flat like others I've seen
ground is a little bland...put some different LAT's on it and it'll look tons better
Lighting, I don't see any. the neutral bases you could put some light posts in... Any lighting is tons better than none at all
Other than the player in the SW corner, this map looks fun to play...
Even so though, the appearance needs some work (cliffs, LAT, lighting)