Sad to say, but this CG seems pretty much dead (only a handful of people contributing to this thread too
) - reasons as above but also to consider, maybe there just aren't so many people playing the game anymore (it is quite old) or there are more casual players who don't want to put in the sort of time and effort needed to fulfil what in hindsight was probably a too ambitious target. They are playing other games that don't have griefing or the stupid rebuy system if your ship blows up...
And the rewards are not exactly spectacular - TBH with 500 million credits spare and probably twice that value in owned ships, the 2 million credits per round trip plus whatever the bonus is are fairly inconsequential to me. Maybe the bonus needs to be more, or better still what I really need is engineering materials and lots of them or maybe push up one of my military rankings.