I know you've probably heard this all before, but please make requests! I don't have an infinite number of ideas, so if this book is going to have more one-shots then I need ideas from you, things that you want to see written.
You can request anything! If you want to suggest a whole one-shot plot, go ahead, but if you just want to suggest a character trait like Shy! Reader or Assassin! Character, then that's fine too - you can even just suggest a character you think I should do more one-shots about.
So yeah, please make requests! You can make as many as you want!