Here's my idea : a tank modeled after modern supercomputers that can "hack" units
Able to take control over enemy tanks for a set period of times / disrupt base defenses
But only useful for support since its only weapon would be special abilities
very fragile ,but with cloak or teleport.
It could look like it was recently stolen from the Order of Nations (like unfinished camo)
Sorry if someone already had this idea i didnt go throught all the forum posts