@Sinoc: Thanks for the honest feedback! You are right, maybe I'm overthinking sprinting. I don't want to be a special snowflake regarding controls, and I don't quite get what you are pointing at. Is using the number buttons for item usage is uncomfortable? I wasn't sure about that, so if it is, I really appreciate that you've mentioned it.
@VampireDev: Thank you for the feedback! I like the idea of introducing controls like that. I hope you don't mind if I steal that.