I've changed my mind about clerics: they shouldn't have the ability to turn undead.
This decision has upended everything I've been working on!
I have more options with undead creatures now, but also don't know how to revise clerics to compensate for the loss of class ability.
There's a concept in Dungeon World that a PC cleric is THE cleric for the world, so you wouldn't be seeing them in large groups unless they were "very important" NPCs or, more likely, villains and opponents. I'm thinking about taking this concept into OSRenstein and saying there are very few clerics overall, but they end up being leaders or chamopions of their faith.
Where does that leave PCs?
I don't know yet, but I'm working on it.