I think it's more along the lines of what makes a player happy about a game's ending rather than it being a 'in your face' happy ending. I'm certainly not asking to turn Night City into Disney Land, but man. With all the science fiction stuff this gam provides, I really don't see why an ending with a positive outlook is impractical. We've got all this wacko science stuff from nanite treatments to binding minds, and this game can't make players work towards a solution where things can work out?
It's a game. Let us win!