I’ll be DMing some more 5e soon and I want to take the opportunity to try some different ways of playing (I’ll post my own suggestions as comments so they can start their own discussion threads). What alternate rules have you tried that you thought worked well? They can be larger changes to the game or little QoL tweaks (though if you can respond to the suggestion with “at this point just play [different game] instead” then that’s probably more than what I’m looking for!)
Drinking a potion of healing is a bonus action. Administering it to someone else is an action.
Or you can use an action to drink it, and it restores the max roll (ie: 2d4+4 -> 12)
Flanking is +2 to hit, instead of advantage. Like reverse-cover.