Introduce Airborne Character.

BFN already has a airborne zombie character (minor problem) and doing mount steep it wasn't difficult to defeat them at all. It is just figuring out how PopCap can implement airborne characters into the game without being broken.

How they would work, for obvious reasons there would have to be restrictions on height level (stay the same as Garlic Drone or Parrot) most likely low damage characters with say 100 health at max otherwise it would be too difficult to focus solely on the Airborne characters whilst maintaining eye on the ground battle. Out of bounds areas too would have to be added. Also an Up and Down button rather than using the ability buttons, for example the go up the key binded for jump would be used, and to go down another button would be used (I know by playing the PS4 that the 'Circle' button does nothing) so therefore corrsiponding buttons on the xbox and pc can be used.

Minor Problem, this is already a great character that has attacks and what what not already thought out thanks to it being added into Mount Steep. Abilities, damage out put, health,  and upgraded would all need to be thought of.

Plant character, I've gone through a lost of characters from pvz2 and the only "flying" plant I can really find is Rotabaga which in all fairness is a rather interesting character that could have so much potential if introduced in this way, or 'Blover' and 'Hurrikale' could somehow become airborne units.

The only thing I can think of that would backfire this idea is that they would be able to fly over obstacles like buildings, trees etc... but simply if needed PopCap could add random hot air balloons or vines that players would have to move around to fight enemies.

Just a thought that I think would be a cool idea, please by all means feel free to add your ideas or feedback
Cheers.