I'd enjoy an autosave and, as another has mentioned, put it in the base game. While it may not be a feature EVERYONE would want, a customizable timer/options would be easy enough (still annoying though because UI) and would help those who get frustrated due to crashes (it can happen due to reasons outside of Starsector)
And yes, we could all mod it in for those who want it. However, before release I believe the game should have this feature implemented