Fire control systems are already pretty impressive. Not so much what currently gets run in ex: an abrams, but field C&C systems have gotten insanely powerful. Admittedly most of that power comes from being an ASIC, so youre not going to do much besides coordinate telemetry and push firing solutions (and play doom), but still there is an absolute fuckload of data getting dredged through those systems and every flop counts.

As the networked battlefield continues to be the ringer everyone knew it would be, the demand for frontline computational power is just going to increase. Especially with jamming tech becoming so critical to both sides in this conflict, the idea of a local controller gets more and more attractive. Tanks already have absurdly excessive power plants, decent sneakiness (relatively dont @ me, it's not a Bradley is all I mean) and can fight their way out of trouble on their own. They make a pretty attractive platform to base a heavy drone mothership off of.