I get what you are saying user, but I feel that you are less angry about the story structure (ie. planeswalkers in center) and more about the general quality of the story.
Mtg answers the age old question:
Evan Watson
Isaac Powell
thing is that planeswalkers are the biggest things holding wizards back that prevent them from telling a good story
if they always fall back on the "whats this sets main walker? alright now how do we make him save the day? what if theyre the bad guy this time how is jace going to stop them?" plan its always going to be shitty
if they for one fucking set just put that aside and say "hey maybe this time the big hero and villain can just be fuckin legendary creatures and the walker can show up on packs on the side?" without getting fired maybe something good could actually be written
Robert Rodriguez
Not even close. Urza is better described as an omnipresent force, but he was far from the entire focus of Dominaria. He was tied with Gerrard for main character of the Weatherlight saga, and there were several sets that didn't feature him at all. He was also more nuanced than any member of the Gatewatch by a mile.