Hi, I would like to suggest adding an "Avoid Refit" checkbox button for the selected fleet in the fleet organization menu.
I think this will be very convenient for players who, like me, like to leave a couple of fleets in combat-ready condition to protect the capital while other fleets are being upgraded.
Such a button will save your time, and allow you not to worry about carefully choosing the correct name for each ship that you send for upgrade from the shipyard menu. Or a short-term leaving the planet's orbit, or whatever else to avoid refit for the cover fleets.
This is my humble suggestion on how to improve QOL when we playing this brilliant game
