Here’s hoping everyone has a great holiday (if they celebrate it) and a fine weekend in any event.
For what it’s worth, I’m not really in favor of a simple raise dead or resurrection spell. Same thing for wish, though as a ninth-level spell maybe I could be convinced otherwise.
If a return to life from death is at all possible, I think a journey into the underworld to retrieve a soul is probably in order, or some other similarly-perilous requirement. With the risk of losing yourself on the quest.
You want your favorite fighter brought back to life? Convince the other four players to send their own PCs on a multi-session mission to bring him back.