I agree with the towers, the deck used to run the phoenix + embalmer combination. This i took out because i wasn't using it. In their place i put in artillery and disenchant, but i agree on the 3 towers point. Now to find a good card to replace the necroblaster with.
BTW the reason i don't run commandos is i no longer see their use. In the past they where in their and they are a very strong defense combo with the rioters retreat. The thing is the windhunters are also very solid and have a lot of uses besides defending.
The spell heavy nature of the deck is by design. The idea is to have a couple of solid monsters run havoc and nuke camps and planets with spells. Because of the shrines of war the void comes back extremely fast.