I'm not into Zyra's changes =/
I used to play her quite a bit ever since I started playing the game. I honestly never liked her old passive, as it requires you to die and dying is generally never a good option (that's why i wasn't into reworl Sion either), so I hoped that one day it gets replaced with something nice.
Now, with the mage update she got a new passive - which is literally just a randomized W. Why does she need two sources for her Seeds? Why not just improving the stack mechanic from her W, for example like pre-nerf GP kegs were (2-5 Stacks, increasing by Levels in her Ult) so you do have more seeds but you also have control of their position. Also, you could give her an actual unique passive. That's really a big thing, considering how dependant her damage is from her plant spots. Now she randomly spawns them, making it harder to create a deathbrush, and probably heavily reducing her power as a solo laner.
I don't have a PBE account, so I obviously can't tell if this update did hit the mark and I'm simply overdramatizing, but I have some concerns about it and I hope she keeps as fun to play as she was so far.
If Faux could be so nice and talk a bit how internal discussions about her seed stacks went, and how come this was the version that was approved in the end, that would be amazing. =)