I was thinking, and feel free to ignore it if it doesn't appeal to you, but could it be possible to improve the scroll enhancement system? Like maybe if the scroll fails, you don't lose a slot? or maybe make it so that if you want to apply more scrolls then the limit, instead of not being able to, it just delete a previous enchantment? It's just that with the best scrolls only having 10% success rate, it's a bit annoying when you only have 1 or 2 success at best before not being able to try anymore, especially with high level gear, since I won't be getting better items soon :/
In order to keep the items balanced, you could maybe reduce the number of attempts but make it a guaranteed success?
I don't know if it's possible to implement things like that, but it would certainly make gear optimization feel a lot better