The Panzer Commander would be a welcome addition to a doctrine that lacks artillery. However, I would argue that a better change would be to allow it to be deployed in tandem with the King Tiger.
Wouldn't that make KT OP due to the aurora bonuses from the Command PV?
However, I personally think Panzer Commander would be a better versatile option.
-Gives the doc an arty option like u mentioned,
- Makes the cmd PV a bit better from the accuracy bonus & extra sight!
Can't ask more.