To the degree that I can, I will qualify/quantify the results and share them, if people are curious. 

@Hubert H Byron III I don't have enough data quantify OpEX savings (Know before AC breaks, etc) or lower vacancy rates.

BRRR depends on whether the upgrades are quantifiable in the marketplace.

Anything you do to increase NOI yields an increase in value that can be quantified.

Remember that the appraiser's license is on the line and it gets riskier and riskier the more people are "trusted" in the report instead of using actual, quantifiable, and measurable data.

I did not get into too many quantifiable numbers and I feel if I could go into more detail on the numbers with our investors that it would go a long way.

Let me count the ways:1) Licensing and Entity Set Up2) Establishing Proper Bank Accounts3) Creating a Phone System 4) Having no PM education or experience5) Accounting6) Marketing - Of themselves and the homes they manage7) Application handling with screening8) Lease execution - minimal understanding of how to fill in a lease9) Tenant laws and regulations10) Tenant relations11) Maintenance (I should say that 5 times)12) Make Ready issues13) Security Deposit Itemizations (the most expensive failure you can quantify)14) Failing to seek advice or education 15) Service Animals16) Fair HousingI could go on, but one of the biggest and would considered the "umbrella".....is not providing a quality service to their owners and tenants. 

Suggest you iron out this with your CPA quantifying the amount, tax and projected income at your future tax rate.Your CPA wants to know what, how much you are invest in cash flow, affordability etc.

How does an investor quantify the knowledge and experience of a wholesaler?

Look at 3br/1ba houses vs 3br/2ba houses and quantify the difference the extra bath makes in price.