Scribe
Legend
There already is a skill system in the game, but it's just "what would a character of your ancestry, background and class be good at? Roll with advantage using the proper attribute stat as a bonus." Maybe people need a cheat sheet for what a former wizard's apprentice might be good at, but I am dubious that is really hard for most groups to figure out. ("No, Steve, being a former wizard's apprentice doesn't mean you're good at taming an unruly horse.")
Honestly the hardest habit to break, is worrying about the nonsense edge case players.
Get rid of that mental load, and it all gets better.