Lots of people have or have tried to game the system by just being active in certain capacities without actually having done many trades themselves. Though with that being said, people can also just keep doing pointless trades to build feedback quite quickly. A lot of the people who took little loans out here were probably doing this. Not always for bad reasons but there have been a lots of cases where I'm positive people were just doing this to essentially 'buy' feedback and make themselves appear more trusted than they actually were. That's why people need to examine what people have actually got the feedback for. Someone with lots of varied trades over years should mean something as opposed to just blindly trusting someone just because they have a lot of green feedback just for being helpful or doing some small deals with the right people. You could probably build a nice bit of 'trusted' feedback very quickly just by giving vouch copies of something or just taking out microloans with everybody who offers them.
I do not think that taking a loan out and paying it back is worthy of positive trust because there should be collateral involved which in theory prevents loans being defaulted. I'm not sure why we would be giving positive trust for someone not defaulting on the loan. I can understand trades a little more but loans are something which I would withhold from giving positive trust because of the amount of times these have been abused in the past and there has been some high profile accounts which have been accused of this. This does not just go for the person lending either I think those offering micro loans have done so to build trust.