Subdoctrine Progression

I don't know about you all, but I very rarely produce small, medium, and large air frames in a playthough. I always just pick one and run with it. Unfortunately this new update doesn't let you get a full doctrine unless you use all air frames. Are we just expected to build everything? Seems research intensive and kind of wasteful. I almost think that subdoctrine progression should be tied to mission type instead of airframe used.

I kind of feel the same way about the navy. Not every country is going to build carriers, yet this new doctinre progression system is suggesting that you should build carriers. I don't like it. What if we had progression tied like this?

Air
1st tree - Progress by using Air superiority
2nd tree - Progress by using Ground attack
3rd tree - Progress by using naval bombing
4th tree - Progress by using strategic bombing

Navy
1st tree - Progress by using naval patrol
2nd tree - Progress by using strike force
3rd tree - Progress by using convoy raiding
4th tree - Progress by using ancillary missions? idk