Zombies dominate Plants, Game is Broken

I disagree. there is barely enough data to be conclusive here.

The rose spam was too much - a rose nerf was completely justified, as it is nearly impossible to advance if everyone on the plant side went rose. I still believe that with an auto-aiming projectile, the rose should have its other abilities heavily nerfed, or the auto aiming mechanic removed, and perhaps a different one introduced, like maybe longer on-hit effect procs.

I believe the game is not broken - the devs have barely had a chance to work any balancing into the game yet, this type of claim is pretty unfair. It's like me hiring you for a job, and then instantly complaining that you're too slow three days later even though you barely have any idea what to do. Most employees aren't adept until a year has passed. I recognize that games have a different budget and support timeline, but the principle is the same.

They have quite a few issues on the go right now, I think that given enough time the game will reach a good equilibrium just as the last one did. It'll take more time due to the increased classes though. I expect the class balancing will cause temporary advantages as it goes back and forth a bit, but they won't last forever.