It'd be nice to be able to edit the config file ingame through Cloth Config + Mod Menu and have it either immediately take effect or have a command to run that reloads the config instead of having to relaunch the game every time you make an edit to the config. It'll save time and be very convenient for testing out various blocks and speeds.

They have a wiki on how to set up the mod to work with Cloth Config and Mod Menu here