By now, everyone in the world knows that American tipping culture is getting out of hand. That doesn't mean you can't introduce another way of "supporting" creators. Mike Ybarra, the former president of Blizzard, shared his desire to tip developers of especially enjoyable games.
"When I beat a game, there are some that just leave me in awe of how amazing the experience was. At the end of the game, I've often thought 'I wish I could give these folks another $10 or $20 because it was worth more than my initial $70 and they didn't try to nickel and dime me every second.'"
Don't let the publishers or upper management touch it, only the people who actually worked on the game itself. Pay it out in addition to any bonus/paycheck they'd normally get, as in the amount paid to these people wouldn't be seen at all by the people in charge of payroll.
But no, that's not what Mike Ybarra is talking about.
And the potential added problem is that once tipping becomes a large part of their salary they will just decrease their salary and say just to get tipped more. I don't believe any outcome in this is a win for gamers or devs.