Profile of William Christensen

Good players are usually the minority.
Not only the unit but the commander is viable even without using the TA. However you definitely need to be good and be able to preserve your troops till you use it. A TA alone is a dead unit if your opponent has AT. A TA supported with 2 or 3 Pz4/ostwind/stug and infantry is a beast.
In 2vs2+, a TA supported with panthers/KT is also a beast.

There's a big difference between how it performs and how it was designed. I have mentioned before: The unit is completely fine as a unit! However, the way it was designed, was a flaw of the old "veteran call-ins" system (Which had been justified and removed!). The penalty things, similar to OKW once HAD, I say again, once HAD! The OKW one got removed, but not this one. The Soviet one (The Soviet "Windustry" as it was) got removed as well, but not this one! The veteran call-in like OKW Elite Pz.IV, veteran Rifleman got removed, but again, not this one! Not the Ace! It needs to be fixed: Replace with a normal KT (Remove the last 2 vets if you want), maybe come out with a commander on top, no MG upgrade and has slightly better LoS. Just, remove the flaw, basically!‎

Here's an outrageous suggestion:

Just replace it with regular Tiger, and then make the skin something you can buy for all heavies in store.

Well, you're not wrong... it's very much an outrageous suggestion. 

Just replace it with the normal Tiger will basically remove the doctrine's flavour. Like, what's "Elite" about it anymore? That's why replace it with the KT is more suitable, consider the Ace's stats are already around the level of the KT and it'll still keep the "Elite" flavour flows (The only Wehrmacht Doctrine got access to the KT)‎

The ace is fine. It is usefull, but you have to consider when and even if you want to buy it instead of something else - exactly as it should be.

Yes, it is completely fine in terms of unit performance‎. It's basically a slightly less armoured KT but with better LOS and RoF. However, its veteran status and the resource penalties are the two things that make the way of using this unit against the core mechanic of the game: Unit preservation and vetting them up. This unit is literally come out being veteran (Meanwhile, other veteran units had been removed long ago due to being imbalance compared to other units that come out non-veteran, which basically the majority) and due to the resource penalties, the effective way of using it would be throwing it away for as many kills as possible (Which basically against the idea of preserving units). Again, as a unit, the Ace seems fine, not UP or OP, but its design, the way it's used is a flaw, so it needs to be fix.‎

In addition, if you replace it with the King, remove its resource penalties but remain at 17 CPs, it won't be that much of a no-brainer choice since the normal Tiger from other doctrines with still came out 4 CPs earlier and during this 4 CPs period, you can still get more units out which combine up would still be better than 1 King.‎

im rank 29 with Imagelessbean in 2vs2 with axis. Bean is using the tiger ace almost 40% of the games and we never lost. it a very powerfull units, in good hands.

However, you guys are just the minority here. No offense, as much as I respect Bean as a person who helps me a lot, but when it's only work for the minority, not the majority then that doesn't mean it's viable. Also, mind you that it's not like the majority is too dumb to make it viable, it's just that the burden of calling it in makes it seems not appealing, compared to other commanders with normal Tiger, which not only a better choice but also, fit the way the game mechanic works: Preserving the Tiger and vetting it up. 
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I'm talking more about the game design of this unit, not its performance. And since this unit is already has a strength around the level of the KT (Less armoured but better LOS and RoF), might as well replace it with the King to remove the flaw of the old veteran things that the Ace still carry today.‎

So call it in, kill stuff with it and sacrifice it or win right away.

Then might as well call it "Shock Tiger", not Tiger Ace. I know that's how it supposed to be used now, but doesn't it feel strange? Like, it's an Ace, and the effective way to use it is to sacrifice it after the initial shock. The resource penalties along with its status are the Ace's own curse. As sad as it is, it needs to get replace, and one of the options that seems most appealing would be the King Tiger, I guess? (To fit its "Elite" theme)‎

Hmm... Pretty good, actually. Even though the enemies in this match was very, very passive... I can still see the potential of this commander.