Switch to RZM(C). Sparky with her passive critters is a great help. Just two days ago I had a maxed out 10-ice base with BH MP boosted, shield-3 and DA-3 on my map. Took it down on first try without a boost with the assistance of level 1 Everspark. As for tanks, they now pee in their pants when they see a base with 3 attacking protos even if the base has no ice.