As you no doubt are aware, as the interest rate goes down, acceleration of an amortized loan using a velocity account which charges interest produces diminishing returns.

I don't quite understand this so called "law of diminishing returns".

Mailing your prospects more often than once per week will run you into diminishing returns very quickly. 

For example if you are making 10 deals in 6 months working 4 days a week, and only make 11 deals the next 6 months working 2 days a week, you can start to spot the diminishing returns a little more easily, or you might find that the 11 houses in the 2nd 6 months were twice as profitable as the 10 houses in the first 6 months, and your productivity might not go up, but your margin does.

@Scott Trench thanks for the reply/acknowledgement and definitely didn’t want to diminish the hard work you and your team at BP is doing (just had to point out a pain point for me and others).

One bad wholesaler doesn't diminish the necessity and usefulness of our service.

West Mobile, Saraland, and Midtown are starting to boom, however, pick the wrong street and the returns are extremely diminished. 

It diminishes my tenant pool which you may find with Submetering the water bill.

I would be making less money while the property value diminishes at the same time. 

You hit a point of diminishing returns with SFR on price points, and that price point is above it in Omaha.