The pitch is always the same: "You need our system or you’ll never make it in this business." 

Companies are free to set their own rules for doing business with them.  

If I live a busy life and don't have the time or care to invest on my own, but want to put, lets say $200k to work, is a 15% cash flow return reasonable? 

Years in business?

My business partner and I purchased a commercial office building a few years ago with creative financing.

The other way I fund deals with none of my own money is using a private lender that I have years of experience and relationship with and/or using HELOC and other business lines of credit.

From real estate investors to other small businesses, I talk to people daily who have no idea about the potential liability under the Telephone Consumer Protection Act ("TCPA")(47 U.S.C. 227 et seq.).There are two initial issues that can create huge problems with your suggestion.

I also believe that I should also invest is my business.

"owned outright"- do the members have personal debt to support this, or is it both zero for personal and for the business?

As far as the business card is concerned, to me personally I think having both things on one business card is acceptable .