Regarding with the lending point
When you come to the bank to get a loan
The bank is asking you for adequate guarantees ..!
Think with me how these guarantees will be formatted with the crypto system?
With comprehensive adoption , these issues will be resolved and banks will be an important part of this system.
Of course. A smart contract can definitely handle those issues and provide the needed solutions without much hassle, except when setting it up.
After that it will be like the current Artificial Intelligence/Machine Learning methods that banks are using to store information and redirect their customers. Using Blockchain it can be implemented, no problem.