Would it be possible to replace the current "X-Ray vision" with normal sight? It seems to me that using normal vision would fix most, if not all, of the problems the unit currently has.
This could also work, but "IR Sights" would need to be an upgrade on more than just infantry. Requiring a unit to be both seen by the IRHT and be fired on by IR-equipped squads would make it incredibly niche. Adding an "IR-Sight" upgrade for the Panther (this was a real thing) and possibly the JP4 would give this new roll a bit more utility.
Yeah I was thinking some units like Panther pintle MG, STG Obers, Sturmpioneers, MG34 and raketen could all upgrade to benefit from this.