First Day Poppy Feels,
Honestly, I don't have many complaints. She feels really good. Like, really good. Q responsive and punctual, W does exactly what it advertises, E feels DAMN good but unchanged, glitches and all, and the ult is a showstopper in Teamfights but also valuable as a crazy nice knockup in-lane (or to hit a jungler clear out of his bush before he pounces)
Being less fearful of Lee-Sin and Yasuo certainly helps, I'm finding her just.. fun. Relaxing and very strong against ganks.
I will say she's way more frail than advertised, but that may be due to her suggested build route. The Passive feels useless in a teamfight but INCREDIBLE in a 1v1.
Note: THE CORRUPTION POTION IS REALLY GOOD TAKE THE POTION. Seriously I doubted it, but after a game or 2 with it I realized with a smart ignite and a well-timed flash-wallbash, they'll end up wasting THEIR flash to get away only to die running.