Balance is overrated.
I could easily argue that good game design shall not be afraid of unfairness and unbalance but rather deal with them dynamically and reward players who are able to find order in chaos.
Have a look at what happened to an extremely varied and fun game, when the devs decided to pursue above all balance:
https://www.reddit.com/r/roguelikes/comments/axyr0l/do_you_guys_think_balancing_dcss_kind_of_ruined/Or the various "level matching" enemies of all those mainstream games which feel really like movies rather than games (Witcher 3, Skyrim..).
As a roguelike lover, I like the deus ex machina, original crazy solutions to apparently unsolvable situations.
The scarecrow of an unbeatable tank-like PC shall be embraced and addressed with further degree of chaos, not by limiting the latter.