Quick update: So I've just encountered my first extremely toxic lobby in this game mode. The opposing team constantly stacked their team and apparently used the level up exploit on these characters. Nearly all of them were displayed as having achieved master rank with these characters.
Of course the used the infamous brown icon and a few other classics like: "Salty", "Sadness", "Terrible", "What smells?", "It's you!" and "Steaming?".
They were spawn camping all the time and it wasn't fun to say the least.
They've ruined one of the best experiences I had in the game for a long time for me ☹️.
I hope PopCap finds a way to prevent this level up exploit that apparently exists for the new characters.
Unfortunately I don't have footage of it and can't report them.