You proposed huge changes for Defensive Tactics (like a making completly new doctrine). Therefore not a smallest chance for this.
That's why I proposed something easy.
Yes, the changes are drastic, but with a commander as bad as this one, I think that's alright. It's not like any of those abilities are hard to implement or have the potential to be really OP.
But you're right, it's very unlikely that we're gonna see an overhaul like that. Although it's probably almost as unlikely to even see smaller changes like the ones you proposed. When did they ever significantly change commander abilities? The only time I can think of was when the Pz4 group in Elite Armor was swapped for the Sturmtiger.