Yeah I like that solution as well, I’m not sure what would be easier for them to do. They could absolutely just ignore it all and we have underperforming spells at each level band. Any new rune abilities, like incinerate for warlocks, will typically outperform non rune abilities unless there’s some interesting modifiers and conditionals. It’s probably also why they added some new ranks in classic in the middle of its lifespan from AQ20. Maybe they could take that approach and drop spell books in any new level up raids.
Starla you’re absolutely right about the spell scaling too and how it’ll pan out at 60