You seem missinformed, she doesn't have on hit healing, heck, all the healing she has now is on her Q, IF she's near max energy, so after a small threshold, she has no healing at all.
As for the turret shots, I assume you got that off as well, she doesn't block them, she still gets hit by them if the turret fired, and each time she goes out of W, she gets a turret shot sent on her. She only has the turret not attack her while she sits around doing nothing but moving.
You can see her position if she's under tower or true sight, you just can't target her with targeted stuff like Panth's Cancer, Talon Q, etc, and auto attacks, but she can be hit by everything else.
Also note that she lost 1 dash fro her ult, lost range from her remaining 2 dashes, lost the blink on W, W no longer slows, and she's still squishy. Her laning phase seems even more harsh than before, but before we know the true numbers (not the ones from Prof. Akali's vid, as the only thing more outdated than them is Yi), we can't really say too much.
Also she can't go in to kill you whenever she wants now, she now has to hit E, which is quite small in terms of hit box, is blocked by creeps, and well, it's a skill shot, so dodge.