I tend to always forget what I'm doing so, heh.
This and the send message button I hardly use.
You know, though, heres how i'd use them:
Instead of running a freighter continuously, using fuel the whole time for moving sub 10% cargo capacity, set a delay order to have it go pick it up and then rest for 6 months, before starting its loop again.
If I could have a send message feature that would let me do something like "%n dropping off %c minerals cap'm!" where %n is the fleet name and %c is the cargo, you would get nice little messages about resource flow every six months.
Neat!