To maximize the perceived value, Charge X for rent, + Y for utilities.

There have been several studies showing that the alpha or people with high perceived status are trusted and followed.

They seem to be more comfortable in bigger cities in Southern Maine where there are better comps and a [perceived] better chance of unloading an asset should they need to take it back.Keep shopping it around.

You may encounter resistance from buyers/sellers if they perceive that you have "an edge" in the process .  

Position of Lien, perceived collateral value, market conditions for liquidation, risk & sellers needs objectives.

Nice and simple ones (like only one mortgage at a time so you know it's the senior mortgage, and maybe some mortgage assignments) will have less perceived risk. 

It's proven science that many of us are prone to do things which we perceive as saving us money. 

There are intrinsic values, such as blue sky in a business, perceived equities that can be transferred, reducing expenses or liabilities can be a value received, you might want the goose that lays the golden egg!

The only perceived disadvantage that comes to mind (I may be overlooking something as I am biased as a Realtor here in CA) is the cost associated with working with one.

I don't care about perceived extra cash flow if I have to work extra hard for it and it ruins my quality of life.