1922 Peace Dollar Alterations

Also, would it be safe to assume that there were 1922 Type 2B proofs created, then melted down just like the 2A proofs and just haven't been discovered yet?
I can't imagine the mint making a change to the dies and not testing it like they did the previous versions.

And if one is found, I wonder if they'll have to recognize it as a type 2B proof, or something to that effect... A big part of the value behind the existing proofs isn't only because they're rare, but because they add further insight into how the Peace dollar was created (which is pretty fun to read about!)

If anyone has some further knowledge/opinions on the topic I would love to hear it.

From what I've heard, there were some back-and-forth alterations and help from George Morgan to make the dies more sustainable, much to Fransisci's chagrin.
And I've read reports from the likes of Van Allen, Roger Burdette and others that oftentimes conflict with each others' speculations, so there doesn't seem to be any solid verdict on this transitional period, only speculation.

But all I can say is what I see on the coin itself.
The olive branch on the Type 2a is further away from the leg and appears as a stub, and the 2a lacks the stem-like incuse above the back talon of the right leg that every Type 2b has. It also lacks the third mountain top as show in these pictures:

If we say "it wasn't a design change, but that more of the stem and mountain top started appearing due to a change in how heavy the strike was", how are the devices on the 2a always so much more crisp and clear? Compare any equally graded Type 2a and 2b and the 2a will win the prize for precision every time.
All the feathers look like they can be counted on even a 63-graded 2a, and the lines in Liberty's hair more pristine, but a 2b with that level of detail can't be found.
If we say somehow that "a weaker strike was used for the 2b", why are there details appearing on the "weaker strike" that aren't on the stronger one? (olive branch incuse, third mountain top, etc)

It doesn't add up, unless I'm completely missing something.

You could also say "it was an issue with the mint" but both types can be found in all three mints, and only in 1922. A Type 2a can't be found in later years from what I've seen.