Since you were talking about missions: you could make lots of credits if you stacked a number of missions to the same destination. Missions where there are 7-8 passengers requiring first class accomodation pay quite a lot more credits than the rest. If you manage to score those for Colonia, great. But other than that, there's not much reason to go that far, and you might prefer to do missions closer instead - especially since you do have to make a return trip.
Other than that, going to Colonia might be useful if you wish to be a member of a player group, and it's also quite useful as a place to sell data and get some repairs in if you're heading farther out.
I suppose it would be interesting as a starting point for new players, especially since you'll find unexplored systems much closer to the new bubble than you would to the old one. Also, things are a bit different: the old bubble has all the non-procedural stuff around it, the new bubble is outside the suppression zone, so you'll see more kinds of procedurally generated stars. Also, the star density is considerably higher.
