Nice.
Two things I'd like to point out:
1) Static cage on keeper and I'd assume Dispel as well? Quick reminder that Horrors are immune to shock (but not to paralyzed) which greatly lessens the effectiveness of SC as a damage booster on wave 5.
2) Two reavers already overlap on similar abilities and there's a SS as well? This only makes sense to me if the SS takes WH while both reaver skip it.
Maybe you guys should try reaver, reaver, aw, ele? AW with PotA and Dispel, ele with Ice Mine and Barrier. This would work better with the reaver combo in mind, IMO.
Ice mine will apply a 100% armor reduction for a few seconds even if the enemy is immune to Frozen / detonated with Dispel. Synergize with PotA to apply AR effect to multiple enemies at once, and Dispel horrors when needed.
P.S. Again, please keep in mind that I lack experience playing at higher promotes