oh this is a really interesting take on dice and how to use them! i'm also really intrigued about how the mechanics/systems will be agnostic. wrt theme: i feel like there's definitely more ways to interpret the word "cold", such as an emotional state or descriptor of something distant or hard to crack... nothing you have to commit to but just wanted to toss in some potential ideas!
Viewing post in [Devlog] Harbinger, the Solo RPG
Ooh yes, I love the idea of using 'cold' in an inconcrete way! I've played with the idea of touching on depression, or loneliness (both of which are poetically described as cold), or even death (I have an old Twine game I keep thinking I want to adapt). I know the theme is optional but I love having an idea to narrow my thoughts around.