Minimum time between missions for Kerbonaughts

[DBT85]

Not sure that anything exists already, but setting a minimum time between landing and re launching for your Kerbals would be a cool way of suggesting they actually need training for their new mission. Maybe tie it to the max quantity of Kerbals you're currently allowed too so that when you only have 5 available its maybe 3-4 days, but with a fully upgraded ATC its like 15 days or something?

[RainDreamer]

Kerbonaught? No Kerbal? XD

Anyway, the down times seems like a nice idea, encouraging expansion to the Astronaut Complex early without artificially limit astronauts functionality like EVA (really, kerbals, you can't open the airlock without having a nicer building?). Also sounds more realistic. Would go well with mods like KeepFit oo.

[hab136]

Not exactly what you asked for, but look at KeepFit.

Also Kerbal Construction Time for time between launches (for the rockets, not the Kerbals).