I would love to see the addition of a system that lets you temporarily prioritize other tasks than others, and then return to the previous prioritization later. It is mostly an issue for me, when I reach a colony that is maybe 8-10+ colonists. Like, after an attack, or in a situation where I need to rearrange my defense line, it would be nice to be able to create a different prioritization order for my colonists, without having to remember their normal settings, as they tend to get quite complex for me in later games.
So a simple switch, like the "manual/automatic" prioritization button, but with a new option. Temporary/critical. Something like that :)
I hope the idea came through!