Of course with more rep lost than once completed.
E.g. now I have two "hanging" missions:
* Bring 200 units of Meatsteak Cahoonas to the station X
* Bring 5 units of Alpha Particle Canon to the station Y
With my ship (only one M4 - started new game while ago) can only take about 15 Meatsteak Cahoonas at once - there is no sense for me to complete this mission nor to wait X years for better ship - I suspect that then 40 rep for completing that mission will have no meaning for me.
In the second mission (5 units of Alpha Particle Canon) there is similar reason - because I haven't discovered enough space to find Alpha Particle Canon sellers - it might occur that completing this mission have no sense in future.
Besides... Fantastic work - having much fun with it
