If we become heavily restricted, what chance does the rest of the DMV have to get their own regulations that make sense?

Fannie or Freddie loans), then there won't be much flexibility because Fannie and Freddie generally have pretty strict guidelines.3. 

If you’re comfortable with the process and local regulations, new construction might yield higher equity, but for simplicity, an existing duplex is safer.

You are strictly a middleman.

But last I check their requirements for LTV/DSCR was very strict.   

Investors need to factor in zoning regulations and parking requirements, which are essential for smooth permit approval.

What you need to do is see what the laws & regulations are with wholesaling in your desired state. 

I always recommending reading the information made publicly available about companies who do a regulation a+ offeringI have no opinion or research on this company.

The requirements describe the regulations in the Philadelphia Code.Landlords must follow all non-discrimination and housing laws.Renters Access Act tenant screening guidelinesYou must comply with this law when screening tenants.

In some cases that's amazing -- one part of the town gov't considers it to be a commercial lodging establishment so it's exempt from STR permitting and regulation.