Yea, its half assed as it is.... you cannot easily find ships with some movement left but at the same token you cannot end turn if there are any ships with full movement left - which is something i would love to be able to do!
If you hit "pass," you can end your turn without issuing orders. If you set the fleet on "guard," they will not pop up in the task queue at all until you take them off guard or they are attacked. If you put them on "Sentry" (I think that is the name), they will not show up in your task queue until a non-friendly ship enters their sensor range.
Also, I believe you can sort the ship list by "movement," which should give you the ships that still have movement points left. I think...
Guard is no good, because you can forget.
sentry is no good because of AI your not at war with constantly activate.
Pass is no good because you still need to give each unit or fleet attention every turn.
being able to END TURN however will leave all ships active and ready and you will not have to give them 'any' attention, ever, until you are finally ready to go through the list.
In Galciv2 it was common practice for me to end turn five or even ten times before bothering to go through my ships, that was wonderful to be able to do that.
Edit: actually what would solve both problems with guard and sentry..... having an option for sentry to only activate for enemy, not neutral.
Then when the sentry ship activates, you can look and see what fleets in that area are on guard and then use them how you see fit.
But the way sentry is now, i am absolutely certain it is absolutely USELESS activating for neutral units = UNUSABLE.