The loan is risky because here begins the problem especially when you have not paid for the time that you said. Especially when the monthly interest is considerably difficult to pay until it increases. Here you will feel hard to make debt.
Loans are too risky both for the lender and the accepter of the loan. Both have a fear of loss in case the loan taken is not return or the collateral taken is not handed back. Trusted escrow can solve these problems.
I see no point why would you use a collateral that you can't afford to lose. You're at a desperate time so you chose to get a loan, so you shouldn't have had the confidence that you'll get the collateral easily. I don't think that you're risking anything at all since a lender wouldn't choose to run away with your collateral. A lender has to gain reputation so he can have even better business opportunities.
Especially in this forum where your account has a value. You're basically ruining your account by scamming someone. You can never join a signature campaign when you have a negative trust and signature campaigns are far more profitable and stable.
Your post have made me wonder, actually why would anyone want to scam other people with hero member/ legendary rank account? As you have said, that is literally ruining your own account, by gaining negative trust on feedback. You need to be really stupid to do something like that, unless you really get the great profit from that but it makes sense only if there is more funds in scammed money, than your account is worth.
But I would like to observe also, that the best thing about having a high-rank account is not only that you can get a great pay-per-post rate, but also you can do more services, because people trust you.
You can be at well-paid signature campaining, have loaning service and also escrow. All that can bring you enormous profits but you would not be able to do such a thing without high rank account, nobody wants to trust a newbie right?