here are my suggestions...
hoth needs to be extended length-wise alot and width-wise just a little.
there need to be 4 at-ats, 3 at-sts and 2 tie-fighter spawns at a new imperial spawn point at the far side of the map.
the rebels need more snowspeeders and 2 x-wings.
there also need to be more rebel trenches.
there should be more rebel cannons and the a.i. should get in them and stay there. the rebel cannon emplacements also need to pack a little more punch.
the tickets need to be raised to at least 500 empire, 400 rebels.
(i know most of these are not possible yet)