I feel like if 2-2-2 gets introduced to OWL, it will eventually get introduced to competitive ladder, which is healthy for the game. 2-2-2 allows for role queue, which allows for a more stable ladder system. You lose creativity, but you allow for a more consistent ladder experience, allowing players to queue for the role they desire and for more consistent compositions in line with how OW is meant to be played (i.e. at least one tank and two supports not the usual quad dps).

It's know it's difficult for a lot of people to see through the negative aspect of "less creativity in compositions" but overall 2-2-2 and role queue will have a net positive impact on the game (that's without even mentioning job stability in OWL).

Edit:This is a 20 minute video by montecristo about 2-2-2. Worth the watch for those of you who have time: https://www.youtube.com/watch?v=eLaBlp7bCAM