Looking forward to when Electric Cherry, Who Who's and Vulture Aid be added (Also the Perks that have not yet been added to some maps, such as: Stamin-Up on Mob Of The Dead).
If it's possible, I think it wouldn't be a bad idea to add Der Wunderfizz to the other maps too (And if that doesn't make much sense since it will have every Perk on the maps, you can make an alternate version of this mod where adds only Der Wunderfizz to all maps. This way it would be something like some of the Zombie Chronicles maps where you can get some Perks that are not on the map via of it)!