Super Soldier PvE

Wave Mode was doomed from the start. Putting personal character progression in a PvP mode is silly. It makes the mode unfair from the beginning. New players stand no chance of winning against veterans with maxed out cards and quit before they have a chance to experience everything. Adding pay to win elements to it made it even more inaccessible, albeit the pay to win aspects were heavily reduced now that there's free options for stabilizers and card fusion fodder in the form of the Joker card. It's also not beginner friendly. I didn't even know you could use any type of card to level up until a few months ago because the process isn't explained thoroughly.

The character card system is still interesting, though. I would love to see a Zombie/PvE mode that adapts Wave Mode card abilities. I.e. Blasters could clear out large groups of zombies, Hunters could apply a team damage buff to a boss they hit with the crossbow, Juggernauts and Shields could act as damage absorbing tanks against boss attacks, etc. It would give people a reason to work on their cards and it might even reignite interest in Wave/Super Soldier modes.