I mean, that's certainly possible, but what would stop Ostheer from going right back into the Puma meta and call them in every single match? I personally agree that it was the techless AI tank follow up that was a bigger problem than the Puma, but reverting the Puma changes now would still risk seeing MobiDef almost every game again because it was simply Ostheer's most effective way of dealing with Allied lights. And seeing the same doctrine over and over wasn't fun at all. The Puma was Ostheer's Command Panther and everyone was sick of it too back then.
Currently the puma comes too late to counter any light vehicle, so something needs to be done to keep the commander atleast playable. (I mean, whats the point in creating new commander when almost every patch kills a commander?)
Give it a 5CP requirement and can be build from t2 for example.
"...but what would stop Ostheer from going right back into the Puma meta and call them in every single match?"
Even back then, mobi def had a horrible late game, Unlike the equivalent allied 5CP call in commander which have good off-maps and other usefull abilities. With the command p4 nerf, Mobi def has legit nothing to offer late game, tac smoke maybe but thats it. You have to choose between a solid mid game at and a strong late game commander.
Worst case when the puma is a call in or t2 vehicle: back to the old meta (which would be alot weaker than it used to be)
But what would you rather see: okw only like currently or atleast some variety in axis plays?