As of jetpack 0.3.13, the jetpack mod itself swaps the character bonus values:
- Toggling the jetpack will now preserve any character bonuses set by other mods (e.g. running speed, mining speed, crafting speed, reach, inventory slots...)
​ ​Previously, only the health bonus was preserved.
RPG System's jetpack compatibility in the interface.on_character_swapped
function is now redundant and can be removed, as it will now increase the bonus values every jetpack toggle instead of restoring them.