Thank you sirNone of us, not one, has perfect knowledge in this hobby and nobody should pretend to do so.
We are all here to learn and I really appreciate threads like yours too. It takes effort and time to post your observations with nice accompanying clear pictures.
A guy I will like to give a shout out to in this arena is @j21 that guy certainly knows how to build a very good 15400 franken. Of course like everyone else he is limited to the parts available in the market but the dude knows his ways around the gen parts variations like a pro.
Yes ofc, no-one knows everything and this applies to everything in life in general, we are all learning everyday
Many nice 15400 frankens around ofc, its a reference that i personally like very much
Unfortunately gen AP parts are indeed so limited, it needs a lot of patience and searching to reach your goal. But this is the beauty right? The exclusivity, the challenge. If everything was readily available and easy(like if you decide for franken rolex for example)it wouldn't have fun.
It's a unique and beautiful hobby