*cough* Armoured vehicle detection *cough* *cough* Mark target *cough* *cough* tracking *cough*
The detection radius is already pretty generous. And the way to kill jp4 is generally to flank it with something with a big gun on it anyway. You can also just smoke it off to neuter it from participating in an engagement.
Does anyone know if recon planes reveal it?
You can also use attack ground to reveal it, if you manage to hit it.
Uhhh, ain't those literally all Soviet tools?
The thing is when JPIV doesn't use it, then it gets flanked and hits camo while reversing to turn itself invisible and likely cause a shot to miss it while probably causing the flanker to be re-microed to attack ground or continue chasing after it - the time of either taking to reveal it again can be fairly significant, to say nothing of how very annoying it is for the flanker to have to suddenly micro and adapt to the camo.
No clue.
True, it if hits, but it's pretty valuable with what I said two paragraphs up.
(For fairness, I'd also prefer Commandos not be capable of such insta-cloaking either, but at least they ain't freaking tanks when they Predator cloak...)