For some context to OP I disagree with this comment.

I do agree that your current setup is audiophile, as for me audiophile is just getting the best audio quality for your budget.

I guess where I am confused is everything past there. If you already have a decent speaker setup that is your preferred listening method, why deep dive in the headphone hobby? For me personally, speakers are just not a viable option at this point between too close of neighbors and respecting the rest of my house (making some noise would be fine but I can’t turn it up too much). I also think that diminishing returns is a thing and that even compared to what they have things aren’t going to be 2x, 5x or even compared to an LCD-5 90x better. However, as you noted things do get better and for me, while they may be smaller differences, those differences are what allow me to teleport and completely lose myself versus just listening to music with good tonal balance.

It really just sounds like you are a speaker person and it is clouding what your comments are supposed to mean. Do you just feel that a speaker setup is just that much better?