I feel the main issue is that this was done in competitive. Like I still see it as cool and all, but I think I would've tolerated it alot more had it not been done in competitive. Cause as in the one video with the Zen player, the Heavy was taking forever to be taken out due to being healed and stuff and Zen's transcendence practically healed it back up easily. That's pretty cheap.
Regardless, the demand for the Talon and Null Sector units to be playable in Custom Matches skyrocketed after that exploit was shown. I wonder how Blizzard is going to respond to them, besides stating that they are going to try and fix the exploit.