Given that these games need to sell at least decently to get post-launch support worth a damn, are small UI concessions aimed for the modern audience really worth this much drama?
Concession to what? Is looking at the backs of heads supposed to be more understandable than having a character lit up like in MM10, or having the "it's your turn unicorn" sitting in their lap? Are console players known to be "back of head" enthusiasts?
As for whether it's this huge dealbreaker, obviously it's not; it's just a visual thing.
But. I
am going to be looking at the UI for approximately 100% of my gameplay time, so I would prefer it to look more pleasant than obnoxious.
It's not like I'm asking for anything more than 2-3 minutes of their time once every 3 years of development.
Cool. I'll be sure to let them know that explaining the rationale for a cosmetic UI decision on art that isn't anywhere near final yet is the single most important piece of PR they can do for this project, and once they've done that, they can blow off doing any more updates ever, because you and the huge market slice you represent will no longer need to follow development, secure in the knowledge that the game will meet your high expectations on every front.
Besides, I can tell you that explaining your gameplay design decisions is much more fun than talking about what cereals you eat for breakfast for some stupid devblog update.
Funny how some devs don't do exactly what you demand all the time then. Oh well, I guess there must be no reason for it, they're just jerks.