I'm new to the PvZGW2 experience. So I come fresh to this without any previous baggage or predispositions. Based on my little experience so far this is my feedback as a new player coming over from other fps.
Zombies
I really like the diversity and blending of the classes. My first master was the goalie all star and I'm currently working on my imp, engineer and soldier. I think for the most part they are particularly balanced with the exception of Electro Brainz. (I believe that has more to do with the element than the characters.)
Plants
Unfortunately on the plants side I haven't experienced the same symmetry. Here's a couple of my frustration points:
1) Chomper camera bug. I lose half my burrow time trying to fix the camera or waiting for it readjust. Something that has already been shared on these forums but add my voice for support.
2) Chomper dying in mid-chomp whether to a super Brainz twirl, impkata or engineer stun. To be clear not to an outside character but to the one being eaten. And personally I don't like how long it takes to digest but could see how that could become OP very quick.
3) Citron peel shield. It's weaker than a newspaper or door zombie shield. My frost citron is advanced, and while I'm ok with the TTK beIng low, the defenses don't parity well. Can we increase his shield without making Citron OP?
4) In general the plants need a more defined CQ class variant. Something with a shotgun. Sure everyone can fight close but not with the ease of the zombies. Suggestion: in exchange for health give Metal Petal or another of your choosing a shotgun blast.
5) Cacti tall-nut I just don't get. After playing with All-Star's tackle dummies the tall-nut seem to offer less protection. Like a shield with a hole in the middle. Now granted putting down two makes a nice temporary barricade. But not much. I'd much rather have the height of the tackle dummy.
Never got into the rose craze and I'm ok with pea and corn since update. Sunflower if left untouched is pretty decent but suffers terribly in CQ (which of course where she needs to be to heal). Otherwise I've gotten my share of fun out of the game so far.
Lastly the real only major gripe I have is that somewhere along the way I lost a legendary sticker. I had the legs to Iron Citron but now it's gone. Any way I can get those back? The RNG of the stickers is tolerable but losing a legendary is majorly irritating.