Did you have some really specific things you wanted out of your game?
Just play GURPS.
Assembling the right mix of mechanics to perfectly match your setting/character concept is a whole game in itself. Sometimes I’ll just build a character for the fun of it.
Only D&D fans don’t want to hear “play a game better suited to what you want to do”
That said, I’d recommend Runequest over WFRP any day of the week, and twice on weekends
5e, the game that’s basically written around epic heroism isn’t gritty and dark enough? Shock. Gasp.
Is there an official Dark Sun setting for 5e yet?
If it’s written around epic heroism, why do we have levels 1-5? I don’t think that’s 5e’s genre. It’s also not low fantasy either, since even at low level you can’t easily get rid of the magic-powered class abilities without a ton of homebrew.
In other words, I don’t think 5e would run well in Dark Sun.
I can’t speak to how well 5e would work with dark sun, but 5e is very much about epic heroism. Levels 1-3 exist entirely as an introductory system to avoid overwhelming new players - IIRC, there are official suggestions to just skip them if playing with experienced players. Additionally, they are designed to go incredibly fast. The meat of the game really starts after that, and the characters quickly catapult to functional super heroes.
