I’m not terribly sure if I’d call it balanced per se, most of them are just bland and uninspiring, even if they do their job. There’s not a lot of variability to them, other than “this one on hits fire. This one on hits AOE. This one on hits healing.” There are some unique ones like Rocketbelt and Everfrost, but I just feel like pretty much every other class of mythics has a wider range of variability in what the items actually do.
Welcome to Renata Glasc’s world. Most of the mythics are just kinda MEH on her and don’t really mesh with her kit that well. Hell, most of the support items are kinda MEH on her since she really wants a lot of CDR, but the majority of the enchanter items don’t actually give it.