Here's another thing that has annoyed me for multiple editions now: the fact that D&D's combat rules always make dealing damage the most optimal choice. Combat will continue to be a boring, repetitive slog as long as players continue to view doing something other than an attack as a waste of their turn. Some editions have tried harder than others to give players interesting options along with dealing damage, but that hasn't always been received well.
This sort of thing is fine if you're still using paper-and-pencil character sheets (or some other digital sheet), but those of us whose players rely on using D&D Beyond are fairly constrained in how we can house rule stuff like this. (In other words, while you can give PCs extra feats and proficiencies and the like in DDB, you can't give them extra attunement slots. The only work-around would be to recreate the magic item but remove the attunement requirement.)