I feel like the downvote button in special should / could be multidimensional. People downvote content out of multiple reasons: “this is incorrect”, “this is really dumb”, “this is off-topic”, “the poster is a jerk”, so goes on.
IMO this would combo really well with the experimental study in the OP.
I’m not a big fan of fishing mechanics, they’re usually shallow “press button at random signal, get a random prize” mechanics.
Also escort missions where the NPC being escorted does not understand that it should protect its own life. I don’t mind repeating a mission due to my own mistakes, but I don’t want to do it because some AI went potato.