I like the Obers idea best where they become accessible in Command HQ after building 2 of any bases. Seems fair and square if you ask me because if the player went for instance for both medic and mechanized base first, they will sacrifice PzHQ for better tanks much later on, for better infantry units earlier instead. Seems like this is a great idea.
Jadgpanzer idea is good too. Accessible when Panzer HQ deployed, but when destroyed still accessible but it will only be the AT vehicle choice available, no Panther and no PanzerIV available if the PzHQ is destroyed. Sounds great.
Ostwind by default in PanzerHQ would be great. OKW does not have late AI vehicle choices late game. They mainly have Luchs which does not scale that well late game.
I like the idea, it creates more gaps and openings. Opportunities also.
Should the cost of KT then be made higher for these changes to apply?
KT I'm not sure.....but I think shouldn;t change KT cost?KT still need all HQ deploy,and KT already expensive,if I chose,maybe I will improve JPIV training time or limit the number when OKW lost PanzerHQ