my hottest Minecraft take is that you should be able to access everything in any difficulty of the game, it just might be easier/farmable in one version.
what I mean, is that you should be able to get to the end, make potions, and access things like tridents and frog lights in peaceful. you can't get blaze rods without blazes, which you need for eyes of ender to go to the end. you also can't make potions without blaze rods.
my suggestion is to have wandering traders trade them, or have them available in loot chests in the nether, or in ruined portals or something.
really anything harder to get in peaceful should be available via wandering trader. slime and gunpowder are!
I'm a peaceful player so. that's why I always think of this
