When I launched the podcast, episode 0, I included a 7th stat 'in case I ever need it'. That stat was Luck. I'm now 14 episodes in (writing, not published) and guess how many times I've used the stat... That's right: zero. This might not be much of a shocker. If there was need for such a stat, surely there would have been one by 5th ed. True enough. Call of Cthulu has one though (actually they have a very cool system concerning luck where you can spend it until... you're out of luck). Anyway, I'll probably ditch it.
On a related note, it got me thinking: are saving throws really necessary? A poison save - that could just be a constitution check. Dodging a fireball? Dex. Someone casts charm person on your fighter? Wisdom save. If I was running a game at a table these days, I would love to try that system out as a way to further simplify things.
A final thought on stat checks. One stat I find I really do need, but that I don't have, is passive perception. This is useful in any normal game, but for my characters it's critical. As the DM and the players all rolled together, I simply have way too much OOC info. If there's a secret door in the room, would my characters look for it? Probably not - but since I know if there is or isn't... it's kind of a non-starter. I'm amazed this has not come up earlier, but that is the case (it's not a secret door, if you're wondering).
Maybe I should port my Luck stat into Passive Perception. Or maybe a Wisdom check makes more sense. What do you think?