Wow, you just suggested 6 DOCTRINAL counters to this unit. Any unit in the game should be counterable with nondoctrinal units, because otherwise you are just feeding the call-in meta problem. In terms of bleeding manpower, good luck attacking infantry with anything that won't be countered by the tiger ace. Hell, any non-doctrinal AT counter gets absolutely murdered by the Tiger Ace. SU-85s and jackson can get hit by target weak point, and then they are dead. AT guns will get sniped quite handily, especially since the zis only has about a 60% chance to penetrate the thing.
I would be fine with the tiger ace if it actually required a fuel investment. It does not. Do not point out the reduced income after it is called in. The reduced income is balanced out by the fact that you can still purchase other armor before the tiger ace, and that you will be destroying your opponents army and manpower income with the ace. At the very least, I feel that the tiger ace income reduction should also last for 5 minutes after the tank dies.
Sorry to say but this unit is fine:
-It comes at 15 cp!
-It's in a doctrine that has no offmap support (B4 in my experience has been a good counter)
Please note as well that Wehrmacht on map artillery like the panzerwerfer sucks bad right now.
-It wrecks your MP income as well as basically stops fuel income
-It needs at least 3 pios to repair it in any reasonable time
-It's a muni hog, But well spent muni normally
-Mines can cause it to get destroyed, And the fear of mines ensures that its not too aggressive
(if it gets a destroyed engine its done)
-Medium tank swarms work wonders versus it
-Overlapping ATG fire still effects it
With that said imo its the best single tank in the game, It's fast, Got good vision range, Got a stun, Has smoke, Has blitz and is great at killing other single tanks.
And is a anti infantry monster on top of it.