Is your feature request related to a problem? Please describe.
Thermoo and its sister mods Scorchful and Frostful add a temperature system to the game. The system makes it harder to explore and traverse certain biomes without the appropriate gear. Though, the difficulty never decreases, even after staying in a biome for a long time.

Describe the solution you'd like
It would be very cool, if RPGStats had a stat for hot and cold resistance. Which would then eventually add a tiny bit of either hot or cold resistance to the player subjected to hot or cold.

Describe alternatives you've considered
Asking for the feature from Scorchful/Frostful developers, but it doesn't feel like it's in the scope of those and it would feel disjoint from RPGStats.

maybe i need a proper addons system at some point

would you just slowly build up resistance over time as you were in those environments or would there be specific actions too?

Just slowly building up resistance would be good enough. Though I think taking ice/fire damage should provide "experience" at a quicker rate. Besides those there aren't many other Frostiful/Scorchful-specific actions or effects one could actually count.