Your clear message here is one of emotion in reaction to how you perceive tenants will treat you.

My wife and I have already discussed what our reaction might be if we do get cash calls from any of our syndications/funds and while we would look at each situation in detail, it's likely we would refuse.

@James Wise my knee-jerk reaction when I read the e-mail this morning was "Huh, so your telling me it's about to get a whole lot easier to negotiate for seller contributions". 

My manager sends me this monthly Tenant Unpaid Charges Summary. As you the owner reviewing this report, what strength or weaknesses you notice? Is there anything they could do better when it comes to collecting rents,...

same with "100% fix and flip financing"... only if you've done 8+ projects... and only in certain states.thoughts / reactions?

I don't know all the specifics of the deal you're in, but my gut reaction is that if you're taking this risk, you need to get paid, either in the form of interest or a higher price. 

Your actions/reactions may well serve to hurt your case.

What is interesting to me is all the owner/operators I know and/or know of that were founded in the 90's, have an almost allergic reaction to interest rate exposure.  

Allergic reaction to yellow jacket sting.

Ignore the neighbor - she will up the torment to get a reaction from you and when you refuse to give one, she'll get bored and move on to another victim.