Before bar blobs could ruin volks blobs easily, you can say goodbye to this now thanks to supression.
Before trucks can be destroyed with infantry, you can forget about that thanks to supression aswell. Instead now tracks can be destroyed by "skillfull" point and click major arty. Its also very bad as provides little counterplay and requires little skill to use.
Before countering allied static play was relied on stukas, which, if delayed, could be too late to turn the fight. Now? Who the hell needs stukas, just rush op jp4s asap to counter any tanks and spam arty with lol 5 vet levels everywhere on most mp rich faction in the game. Especially, near your med truck where you can reinforce it if its ever wiped by counterbarrages (and also reinforce durring enemy barages, which reduces wipe and vet loss risk).
Game just lost so much strategic depth its sad.
It would just be one doctrine.
And what? Calliope (as many other op bs units like TA and rifle flamers before) was also in just one doctrine, it never keept it form being op as hell and this doctrine picked in every game. Same happened with forti, which are very strong now, if not stronget owerall doctrine in team games.