Why do some spells scale with slot, but others that could don’t?
Cure Wounds scales, Bigby’s Hand Scales… Lesser Restoration doesn’t scale into Greater Restoration
I’d love to see more spells scale with slot, but am curious why more didn’t Two reasons – complexity, in that some don't scale easily, and we also wanted to avoid having a few spells that were so versatile that you could always prep anything you might need

— Mike Mearls (@mikemearls) June 7, 2018