Q:
Bring the 5vs5 ranked pvp tournament
Maybe read some new patchnotes from last few patches. And you will see that league is still solo/duo (which is good because od lower population) but you can join daily/monthly tournaments where you need to have full 5man team.
So based you your “Bring the 5vs5 ranked pvp tournament” – it’s already in game.
Not going to lose 13 matches in a row if you are where you belong.