Tony Vargas
Legend
We are talking the validity of arguing popularity implies no impetus for improvement. Past popularity having clearly been no shield against revision argues against that. The fighter has always been a very popular class. It has been subjected to many attempts to improve upon it, in spite of that popularity. It has been heartily criticized in spite of that popularity.We're not talking about prior editions.
Neither of those things have changed with 5e. The fighter is still very popular, it's still subject to criticism.
I expect neither to change going forward.
And, no, I don't expect WotC to officially revise the 5e fighter (though I expect the 6e fighter might not look too much like it, if there ever is one). I've never really expected much in the way of errata from 5e, it's contrary to the way it's presented. It's a starting point. Why move the starting point after people have already started?
I'm frankly surprised the Ranger has received as much UA tinkering as it has, but even it hasn't been officially re-written. It wouldn't make a lot of sense, when they're trying to stabilize the brand image, to have different versions of the PH floating around with radically different versions of the class. It would sow confusion. Rather like Essentials, really.