Gate Keeper/Sectopod/Berserker & MEC: So I've played around with each one and I feel that they shuold not be part of "Playable Aliens". As the MEC is redundant, due to now of the SPARKS.

As for the Gatekeeper/Sectpod I find them to OP, to be in the hands of X-COM and they are far too big to fit inside the Amory and cuase alot of clipping issues. My only suggestion is to sacle down the Sectpod and Gatekeeper to Turret or Solider size, and make them like small units.

(See freidly advent mod, min-sectopod)

As for the Berserker, still far too big for the amory and such, and the powers while are nice, I feel a Berserker shuold not be able to be tamed.