I just went back and updated the formatting of my OP to be legible in Dark Mode, and updated the links. Apologies for the delay in making it more accessible – I wasn't expecting this thread to resurface and I had to remove all formatting in order to reformat it correctly. Hopefully that helps for discussion going forward.
EDIT: Also, since I'm painfully aware of how a class write-up can become bloated, I did a quick comparison of my word count (sans designs notes) to the core fighter (sans subclasses, but including alternate class features). My version is just over 3,500 words, while the D&D Beyond version is 2,000 words. By comparison, the D&D Beyond rogue is about 1,750, the cleric is about 2,500, and the warlock is about a whopping 5,500 words. So my Fighter re-write is definitely at the uppermost level of where I would want the word count (i.e. complexity) to be, and in the future I'll be looking for places to bring that down closer to the cleric.