Adding the tax free enchantment mod would be a nice QOL for AOF. https://www.curseforge.com/minecraft/mc-mods/tax-free-levels.

Reaching high levels in Minecraft is hard, because each level requires more XP than the last.
Since Anvils and Enchantment Tables work off of levels, not off of collected XP, that means the higher your level, the higher the actual cost in terms of XP.

Tax Free Levels "flattens the curve" of the ever-increasing anvil and enchantment costs above level 30, meaning you'll always pay the same amount of XP, regardless of how high your level is.
It also makes it so that renaming an item always only costs 1 level.

More precisely:
If you are above level 30, instead of e.g. paying 3 levels, you pay the amount of XP needed to get from level 27 to 30.
If the level cost is above 30, you pay the amount of XP needed to get from 0 to that level.