The Game Is Over
No, that's totally cool. I am not (hopefully) implying the other classes be ignored.They're the only two PHB classes that desperately need help.
That doesn't mean Level Up should ignore other classes. You asked which classes need help the most. Beastmasters and Wild Mages are the only two subclasses I consider unplayable out of the book.
My intent was to show which classes perhaps are most deserving of a full rewrite. So far obviously Fighter, Monk, Ranger, and Sorcerer are quite high.