The higher payment for missions was not possible, this is something ive seen Igiss mention a couple of times.
I choose to trade, and i love it. I have 2 standard long-range runs, both equal in danger when someone even attempts to pirate you. I make 20+ mill per full run, and on a good day that takes a little under 20 minutes to complete. Its a long run, and wont squeeze out the best of the best Cash Per Second that you can make. I have more then enough credits stacked up to buy 2 Bs's with License and all, but thats not my goal. I trade for fun, the credits are just a second grade benifit to me. Sure i like the big numbers on my bank-account, but since its useless credits i dont mind it too much.
Ive seen more then enough people in traders on a day-to-day basis, these guys should be recruited (if they havent been allready) into a faction. They function as a steady influx of credits, when you add it up you can make around 120/150 mil credits a day, with about 2/3 traders. With the real trade-addicts it goes a bit different most real addicts can run around making 200/300 mil a day. You shouldnt be trading your butt off alone, especially in a faction. Get one Adv train, let it make at least 1 run a day. That way you can give all new recruits enough creds to buy a decent sized transport for themselfs. If you really are in need of credits, then organize a few convoy's with escorts. First, it looks good, second its good for your overall wallet, third its all for RP.
There are more ways to earn credits then just trade yourself. Do it in a group and have some fun. My most funniest Sirius Moment happened in my Traders.
"War. War never changes. Since the dawn of human kind, when our ancestors first discovered the killing power of rock and bone, blood has been spilled in the name of everything, from God to justice to simple, psychotic rage."