It puts the lender in a vulnerable position, because the bank is going to take 1st lien position.  

I think that a professional opinion on how the business is being run, its vulnerabilities, how to protect against the downside, etc, could all be of benefit at this stage of scaling the business.

I feel as if this could be a low risk opportunity to get my feet wet in the business without putting myself in such financial vulnerability.

However, it made me realize that I was so vulnerable depending on a job and it is something that I want to change aggressively over the past year or two.

So we definitely need to be reasonable with it but also not leave ourselves vulnerable to disrespectful guests.

I'm exposing my soft underbelly and vulnerability is perceived as "weakness" or even incompetence.

We need more people who are committed to caring for our vulnerable populations.

Just as a good litigation attorney can pierce the corporate veil when a LLC principal makes a mistake, a good corporate/asset protection attorney can minimize or eliminate a LLC's vulnerability to piercing the veil. 

When you build up equity, you are more vulnerable to ending up with negative equity if the economy turns south, or the possibility of negative equity when trying to sell the property, if you need liquid cash.

If your goal is to grow your portfolio, then yes, leveraging the equity you have in your existing properties might be a good strategy PROVIDED you have enough reserves to not be making yourself vulnerable to unforeseen events.