As mentioned by Papa Jefe before he rolled, and uncle Aaron in the latest dev update, 5v5 allows for more individual carry potential.
In watching one of the first ever dev updates I saw for Overwatch (this was before I even played the game) Jefe had stated that 6v6 was the perfect number of players to ENFORCE team cohesion and synergy as a requirement for winning.
Well… It works too well… So they’re going to 5v5…
Personally I know 2-2-2 made the game way more enjoyable for me. This game was garbage when OQ was the only queue.
I will concede though, secretly I wouldn’t be surprised if 2-2-2 was at least 35+% influenced by shutting down GOATS. It literally had to be…
Personally the Hero Shooter meta was my favorite and removing a tank will likely bring back more of that play style.
In the Dev update for 5v5, Uncle Aaron says they want the game to be more flanky and duelist style (paraphrased but I’ll post the link for you if you care) than a big mashup of team fights.
6v6 is too complicated for casual players to understand and too many abilities and cooldowns for them to wrap their head around. Which is why the learning curve is so steep for Overwatch.