The only time this ability is OP is on a retreating blob at base, but to do that you need LoS.
If you call the recon loiter from Jaeger, it takes quite a while for the plane to arrive, then you need to call the stuka, so I doubt you would have time to hit the inf as long as they move quickly when they get back to base, which should be obvious given the loitering plane and the stuka noise. Only on a very large 4v4 map with a long retreat might you have enough time.
It becomes more powerful if you can have a team mate do the recon, OKW flares being ideal, which also means you can have a command panther with elifant for insane LoS haha. But at least thats co-ordinated team play.
Anyway, blobbing getting punished is a good thing in my book. And anything else like a team weapon, or repairing tank, has the counter play opportunity of moving.
