I met with a local RE attorney yesterday who's primary job is litigation. So his take was from a reverse engineered litigious standpoint. He says the Series LLC is hands down the best way for asset protection. When you have the Series LLC, you do not need the high liability insurance coverage if you do not own homes outright. If ppl wanna sue you, it becomes less of a payday because you have a 1st lien holder that needs to get paid first, after that only then can they come after your equity. Not worth it for the attorney who's suing you because it is not a guaranteed payday and plus you might not have much equity to go after.
An example he gave was a RE investor who had about 15 SFRs (cant remember if they were fully paid for or not) without LLCs and was sued by someone he had been in a car accident with. The other party had an attorney check his assets and found a possible payday. The cost to defend yourself in court can amount to quite a bit and even if you win, you are still out a lot of time and money.
However, he stressed the Series LLC is NOT guaranteed protection for DOS or NEGLIGENCE.
To me, the Series LLC sounds doable if you own the properties outright. But if you are starting out, you will likely have mortgages tied to your properties. Taking another hard look at umbrella coverage now..
This being said, I like the idea of commercial lending where LLCs seem to be more acceptable at the onset. Putting down more upfront will likely be a reality, but I don't see any other solution at this time for expanding.