Also for a lot of people, looting is absolutely not one of the biggest appeals of POTCO/TLOPO. In fact a lot of us hate it, lucky or not.
I think the game appeals on many levels and to say one is better than the other will just open another can of worms.
Anywho, with trading as with anything else in multi-player a designer has to probably think in different levels as well, as in, what's best for the games world at large, how much impact can a facet of play have on individuals as well.
As for trading, does trading, bartering or selling for gold impact the whole game, or players themselves? I don't think any form of trading effects the players as a whole. For instance, If I don't want to spend forever as a single account player to get the mats to upgrade my ship why shouldn't I be able to barter or trade or just outright buy the mats from someone willing to sell them? It's my decision, I'm only effecting MY game. The warnings of "it'll cause a traders machine or full time 3rd party churning gold thing' are irrelevant to the game as a whole. I don't do PVP, should I tell Tlopo to take it away because I think it's not worth it? Absolutely not. Don't do trading because it cheapens the game? I think not.
So what? It's just another fraction in the game, what people do with their loot doesn't effect me whatsoever. Right now tlopo has us with little holding space, no place to put what we'd really like to keep - such as higher weapons and holiday clothes. No banks or personal large chests.
Whether there's a want for a trade system the poll answers that. Whether there's a need for a trade system, selling good stuff for pennies because you don't have the room answers that as well.