The concept of seasons is a really cool one, but winter itself is particularly invasive part of it. Having a balanced snow/ice accumulation mechanic seems like it'd be tricky given game limitations, but either way having everything frozen over for new chunk generation and then switching to a new season is pretty jarring. It'd be nice to have a few toggles for generating snow or ice in new chunks as well as passive water freezing in the winter.

You can already disable the temperature changes in the config file. Changing how ice/snow happens in the game is out of the scope of this mod. All this mod does is change the biome's temperature and precipitation, enabling snow/ice to form during the winter and melt during warmer seasons.