The free turret for the Soviets have lead to a lot of anti-vehicle turret ideas. Here's a sketch of some possible turrets on that theme, based on the T-55 turret.
Note that this does not mean an anti-vehicle turret is confirmed, as the desolator tower's armour erosion feature means it could potentially function as anti-vehicle by weakening vehicles until the sentry gun can punch it apart.
Pretty mean, I wouldn't want to take that on without rockets.
*Cue rush of Anti-tank turret suggestions on wiki*
*starts A-team music*
I like the leech beam idea! It could make little tank emplacements a good idea, instead of a lot of static defences.