Spotting scope has been there since beginning, allow all ostheer armor to self spot for 30 munition, pay once.
For spotting scopes, at least you have the trade-off between moving (including) and spotting. Also, the longest-range tank that benefits from it has range 50 (Panther or Stugs). I don't even want to imagine what a self-spotting Elefant would have looked like.
Range 60 self-spotting tank with no mobility trade-off might be a bit trickier (*cough* JP4 *cough*).
It stack with 222 vet2, allow map hack (And I had been accursed by using it).
I think I prefer the idea of having to use scout vehicles into the late-game (T70, 222, etc), as opposed to having self-spotting tanks. That is, assuming that the vehicles meant for scouting are:
- Cheap, but not dirt-cheap
- The sight range they provide is short enough so that they have to be slightly exposed.
222 + Spotting scopes is broken and completely fails both requirements I mentioned. However, it is easier to fix 222 + spotting scope combo than breaking every other faction to match this cheese.
The easiest way is to make scoping scope upgrade exclusive with other buffs -- similar to how USF Pershing commander "Combined Arms" works. You are the one that found the Pershing bug, so you know what I mean!
I have never seen the combo of Panther Command + 222 vet 2 + Scope since game is often over by the time the combo is success, but you can guess how broken it is.
Command Panther aura is +20 sight range (additive, not multiplicative). God (222) already has an insane spotting range, though. I don't think this will make a noticeable difference.