While the Poppy update is excellent from a visual/thematic standpoint...
The kit design (mainly her new ultimate) shows a clear lack of understanding of what old Poppy players love about her. No matter where Poppy was played, no matter how she was built, old Poppy has a very clear playstyle and role which her new rework forgets - that of a diver. Poppy was always a selfish, offensively oriented character, and her new kit does a complete 180 and gives her a ranged harass, a way to stop enemy divers, and most egregiously, a disengage ultimate. I could understand her being an offensive tank or heavy fighter, a Jarvan or a Darius, but this? This is Maokai, this isn't Poppy.
Her new passive, which provides ranged harass or farming, could be easily justified as a way to give her ability to farm in lane. Her new W, which creates a dash-stopping wall, could be used as a way of keeping targets in range. But her ultimate is horrendous. On another character? Gold. But Poppy has always been a diver, an offensive fighter. She is a Retribution Paladin, not a Protection one, a punisher of the wicked, not a protector of the weak. Sadly, knowing Riot, the very fact that they've unveiled their plans shows its already too late to change this.