I agree with this, and this I think is also the problem with both items with exceptionally powerful actives, and itemization as a whole. Effects like CC cleansing, self-stasis or a self-resurrect may be healthy on certain champions, or against other champions, but when they're on items available to everyone (namely QSS, Zhonya's and GA), they get to hard-counter a whole bunch of mechanics, and thereby invalidate certain kits. This, in turn, pushes those kits to be balanced around getting hard-countered, which makes them oppressive and forces whoever's playing against them to rush their counter-item. I think part of the solution might involve taking a look at older items and evaluating their place in the game (Zhonya's is probably still relevant, even if it does hard-counter champions like Zed, but QSS is really outdated). In the case of champions like Malzahar, though, the kits themselves also need reworks, as they lack innate counterplay, and with him in particular his update kind of made him even worse in this respect.