The other 5e DM in my local store uses the Plot Points variant rule in the DMG. His group routinely does things like piss off large organizations, get into a losing fight, and then plot point a way to live, or stuff like a champion fighter jumping off the top of a tower at level 2 with no magic items and spending his plot point to say he lives. He didn't even give a reason why he lived, he just said he did. The game has devolved into everyone trolling each other at the table because their plot points can save them, and I guess it's fun for them, but I'd never want my own games to turn into that.