I get it, you mean transporting something like a colonists and their equipment. Yea, I could see that being a useful money making tool. I thought you were talking about transporting resources, sorry.

Problem with "bring resources here for huge amount of cash" type of quests is they are open to, well, not abuse, but cheating. In a way. I have engines that take me across 12 LY in 25 or so minutes, if there was some planet that would buy a resource for much more than earth does, I could just buy the resource on earth for cheap, sell it there for profits, repeat, repeat... If the profit margins would be to small and I would just waste solars on  fuel doing it that way, then what is the point? Who would haul brass to -1 -3 to sell it for, lets say 65 solars a cubic meter, when he could just as well sell it on earth for 54? I mean, maybe he could make a tiny profit (assuming engines don't eat to much fuel) but it's to small of a thing to bother with. Even if I haul 6000 brass with the prices I specified, that would net me some 66000 extra solars.

I have no idea what goes into building a browser game, so I have no idea how difficult this would be to code and implement. Obviously if this takes up to much time then it's not worth it, it's just a minor thing that I would somewhat enjoy. But if it could be easy to do and implement, it could be a nice feature. I mean, the game keeps track of all the solars you make and spend, might as well have a database entry every time you push the "unload" button in the mining module. Maybe it could even lead to competitions of some sort. "Whoever mines 50000 iron first gets a XXXX module Mk. X", etc.

Since the whole premise of the game is "earth is running low on resources, we need more!", I thought it could be a neat idea to have a "top miners" section. Could be just a simple new window in the earth's "Commodity Exchange" station. You click on it and see what player extracted how many total resources. Maybe you could even click on someone's name and see how many of what particular resource he/she extracted. I just think it would be interesting to compare mining statistics.