I have a game coming up (5e, custom setting) that has me a little on edge. To be fair the DM is on edge too. We were told Dawn of Worlds (a separate game, used for playing gods and worldbuilding) would be the first game night, followed by us making characters in that world ("When the DM decides the world is appropriate for use"). Until that time, we can't choose races or classes because they MIGHT NOT EXIST IN THIS WORLD ("If you want to play a particular race, ensure it is made during Dawn of Worlds"), and we can't choose character personalities, goals, etc ("Because they might not fit with the story").
So, instead of getting upset about this (Hey, it's a chance to hang out with people I like and be social, which is rarer every day), I'm positing a challenge. Not knowing about available races or classes, and without causing potential to interfere with the finely crafted story awaiting you, what kind of amazing (but not too amazing, because the banhammer is on a hair-trigger!) character can you imagine? Oh, and careers are off the table as well. ("I don't know if your concept (a spellsword sellsword) would work for the story.")
If the DM running this happens to find it (ohi!) then know that I'm posting here where we can collectively throw tantrums about things instead of rocking the boat at the table and ruining everyone's night, because I WANT EVERYONE to have a nice night.