A compromise between whom and what? What are people who love to play Off-Tank or hate Solo Tanking are gaining from 1/3/2?
Everyone who played Tank before Role Q was implemented already has done enough “testing” to have a valid opinion on 1/3/2.
Also people are not “crying”. Jeff literally asked for our feedback on this idea:
So when do you expect people to make their voices heard?
After the change hits the PTR and is thereby basically confirmed to make it on live servers no matter what?
And what exactly makes you the bigger person here?
You don’t care about the concerns of Tank players, so you probably also wouldn’t care about them leaving - if it weren’t for your DPS Q times that is 
Less people watching and playing is a fate that comes upon all games - sooner or later. Though I am pretty confident that it will rather be later than sooner for Overwatch. It will get a major “expansion” soon and that will bring not only new players, but also make some people return who have left.
Instead of trying to reduce Queue times by changing the Tank Role beyond recognition just for the sake of needing less of them, it would be good advice to entice the new and returning players to give the Tank role a shot.
Release new Tanks to equalize the Hero rosters, ask Tank players who stopped playing what would make them come back, listen to the concerns of the Tank players who are still here.
Insulting and belittling people won’t change anyone’s mind and I am pretty certain you can do better than that.