Just got the game for PS4, and played it for about an hour. It's a really fun game! I've only played Gardens & Graveyards mode so far, but I'm having a ton of fun. Haven't played many classes yet, since I play the classes no one picks. So I've only played Engineer, Scientist, and Sunflower. I'm not surprised no one likes playing the healing role, no one ever likes playing them. Gonna play some more after dinner.
Also, just like everyone else. My GS pre-order code didn't work. I put it in, and it said "this code may be invalid, or already has been used."