I got a suggestion for another unit, a siege one with massive strength against buildings and melee.
A huge ram sized unit, something like a rhino, it could be called Helzemolisher or Stone Crusher or Rathzvog.
along with this we could add another building called Hell Gate or Underworld Portal, personally i'd rather go with the latter, cause i want to keep all the Satanic stuff to minimum, it could spawn the Behemoth and the unit above, if this implemented then we'll have to remove the Wicker Behemoth, and i would also like the Summoner to summon this.
Concept Art will come as soon as i have time.