Allow me to get the ball rolling with some ideas for Voidtech.

Vanguard: Void Technician - engineer variant, deploys a phase cannon with 4 str chance to inflict dimiensional instability for 2 turns. Bonus health restoration when repairing voidtech machine units.
Riftwalker: sniper, can teleport.
Phase troopers - troopers with teleport and void rifles, which inflict dim. inst.
Void Tank - laser tank with rift cannon instead of laser and ability that inflicts dim. desync over one hex radius.

Amazon:
Rift Caller: biomancer variant with abilities dimensional desync and dimensional rift, but not a healer.
Riftwalker: huntress with kinetic channel and Stasis arrow ability with 6 strength chance to remove all action points from a single enemy, 10 against units with dim. inst..

Voidtech Amazon cont.
Summoner - uses rifts to call forth a random animal unit that will be teleported back to where it came from when battle ends. Fumble will summon a hostile unit instead. Summoned animals have a small chance to dim. desync at end of each turn for 1 turn.
Void Bombardon - has rift generator's rift ability and does kinetic damage.

VT Assembly
Riftwalker w/ Desync Shot and Stasis Snap Shot. Desync applies dim. desync., Stasis has a chance to remove an extra ap from enemy even if stagger is resisted.
Harvester - abducts units and removes all ap from victim. If target has low health, the Harvester can do one of two abilities the next turn: harvest (kills unit and restores health to Harvester based on tier), or reassemble (kills unit and constructs a random Assembly unit of same tier as victim). These abilities can also be used on units constricted by a constrictor. Flying. Reassemble will create naval or flying units if used on water.