Yes, if we consider it to be a "new economic system", and not just "blogging platform" , we would definetly need more economic tools.
As easy it is for someone in traditional economic system to borrow some money to buy a car and start a career as Uber driver - it should be even more easy for someone to borrow some SP and start a career as Steemit curator.
We should have wallets showing what's is our own money and what's under our management , and the loaning should be able to take back borrowed SP any time.
It's just @steemit account shouldn't be used for that, it should remain just private enterprise .