Junkenstein’s Lab makes me so mad about PvE being canceled

The game mode is just amazing and besides some balancing problems, it's one of the most fun I've had with the game in a long time.

Seriously, I know that probably 90% or even all of the "mutations" were taken off of the PvE foundation, but they bring so much more variety to the gameplay, almost like discovering a new hero.

It's so good that I feel sad just thinking this would be an incredible PvE mode, where I could spend much time leveling up the heroes, trying to discover and craft new builds. Such a waste of potential...