We deliver our properties free of both (noted as such in the lease) and then contractually make the tenant liable for prevention/termination. 

In other words, I already have a checking and savings with BoA, but I would create a 2nd savings account (within my regular account) and put all the rental properties last months and security into that account (combined).Is this the correct way to prevent co-mingling of funds, or what would you recommend?

While it’s common for PMs to switch utilities to avoid service interruptions, the mistake was not monitoring the usage or cutting power to unnecessary areas once the tenant overstayed.

It’s unnecessary and potentially problematic to add the ex-partner to the title before the sale.

If you hire a PM, your financial account structure can be simpler.If you plan to continue purchasing rentals, I like some key accounts at the "management" level (income, opex, tax, owncp, reserve) and only have 1 checking account per property to prevent having 100 accounts and unnecessary complexity.

It has cost many people including myself a lot of unnecessary money and still is because you deal with the tax portion of opening unnecessary LLCs recommended by supposed professionals. 

Send me a message if you would like a copy of our7 CRITICAL STEPS TO PREVENT A TENANT NIGHTMARE BEFORE HANDING OVER THE KEYS

In that case, you’d typically need to file a legal challenge, which could involve going to court and showing that the restriction is unnecessary or unreasonable.The best advice I can give would be to consult a real estate attorney to understand your specific situation and options.

Does anyone take this info into consideration when looking at a rental market or is such analysis unnecessary?

Transparency is key—being honest will help you avoid unnecessary stress and ensure peace of mind.