I treat the LLCs as "disregarded entitys" for IRS purposes so no more book keeping needed.  

And people thinking the way you move financially should be strictly mathematically logical and completely disregarding behavioral tendencies.

In order for the plaintiff to do that, the plaintiff must prove two things: there must be a unity of interest and ownership such that the separate personalities of the entity and the owner no longer exists; andan inequitable result will follow if the acts are treated as those of the entity alone.Unity of Interest and OwnershipThese are factors the plaintiff could use to show a unity of interest and ownership exists:one individual's ownership of the entire entity;use of the same office or business location by the LLC and owner;commingling of funds and other assets of the owner and the entity;an individual holding out that he / she is personally liable for debts of the corporation;failure to maintain minutes or adequate corporate records;disregard of corporate formalities;absence of corporate assets and inadequate capitalization; andthe use of an entity as a mere shell, instrumentality or conduit for the business of an individual.Importantly, no single one of these factors is determinative, but the court must examine all the circumstances to determine whether the “unity of interest” test is met.

There are at least 10 additional tax advantages that I utilize for my holding LLC (treated as an S-Corp) which are not available to LLCs treated as either disregarded entities or partnerships for tax purposes). 

Most folks still stick with the "parent / sub" LLC structure with the parent LLC being the "JV" entity and the sub LLCs being wholly owed by the parent LLC so that they are disregarded entities for tax purposes. 

Your disregard for the costs of anti-landlord legislation and taxes makes your post ridiculous.

If you actually get sued, they will simply disregard the LLC.

We have several properties we co-own, but I keep hearing all of the asset protection plans talk only about single-member LLCs being the way to go for the ease of taxes end-of-year since those are pass-through/disregarded entities.

The law calls for civil penalties of up to $1,000 per violation for offenders, authorizing the state attorney general to investigate violations.Brnovich, during his time as attorney general, ordered civil penalties of hundreds of thousands of dollars for several companies disregarding the list between 2017 and 2022.

First item of importance on this conversation, it crosses lines of 2 economic factors, with the added fun of Gov. actions as a 3rd force factor, and this is why 99% of people get it wrong as they get tunnel vision on just 1 segment and disregard the relation between all of them as a whole.