This creates more flexibility with rates, terms, maximum loan amounts and minimum qualifications.

How would the qualification criteria change?

They also only put these offers in on very specific types of properties, because they feel confident in their qualifications to assess the technical merits and weaknesses of these properties by themselves.

There are a whole list of other qualifications, but it's worth pursuing where possible for the reasons I listed above.

This is awesome because again, you are securing a line of credit that you are self insuring so the bank gives you a card without as many hoops or weird qualifications. 

I would also ask questions to whoever gives you a pre-qualification.

With that in the consideration, I think you should talk to a lender and get a pre qualification where they can assess your finances, Debt to Income Ratio, credit score, and give you a true assessment of what you'd be able to get out of the loan.

I feel that business should be done in person and should be based on credibility and qualifications in real life and not just online.

Let me throw out a couple of other features: no income qualification (yes, you read that correctly), no pre-payment penalty, ability to run multiple projects for the same amount as running one project in the traditional manner, lower interest rates, and so on.  

These applicants would not meet the my minimum qualifications-3x gross, 2.5x net, 1st, last and security deposit, credit score of 600+, previous LL references, employment and earnings verification, background check and more.