I mean I got something similar.
Although I think my method is a lot simpler.
I.e. Pick Two heroes, your teammate in the same role picks two heroes. Now you share those 4 heroes with your teammate, but don’t have access to the rest of the heroes.
Picks are secret from the enemy team.
With bans, you might not get the hero you want.
With picks you always get the hero you want.
However there’s a shadow game of which team is able to run cheese comps, with the enemy team potentially not having access to easy counterpicks.
I even add in an optional at the end, where picks are secret, and the TAB screen doesn’t instantly update when there’s a hero switch.