Obvious but pointless as a fix, given how non-lifesteal version was around earlier and had the same problems as the previous version (never used outside of niche comps with a hypercarry needing a shieldbot).
You are aware there are also people who did know what Tassadar could do, but simply didn’t like it and therefore didn’t play him? You don’t have the monopoly on knowledge on Tassadar just because you liked his previous kit.
I’m not sure why you’re surprised they listened to people not maining/playing/liking Tassadar, given how that group included just about everyone.