What wouldn't be better than a Roth which is tax free, has no maintenance issues, and is "instantly" transferred to your heirs upon your death (any account names beneficiaries and is transferred on death).As always, it comes down to what one is comfortable investing in, or having somebody else invest / manage for you, and what can you effectively make money.

People have done loans subject to but the original borrower stays on the loan and it could be at risk to be called once a deed is transferred

Now onto the real estate...If you truly want to protect yourself against STR regulations only purchase property with the intent of  operating as an STR where these three principles apply: (1) the use is allowed, (2) the use requirements are protected by in place permitting and licensing and (3) the permissions are transferable through a sale.

The property manager should transfer those funds to you.

A good way to check the reliability of a property is to see how many times it's been transferred throughout the years.

Having the right attorney is a big part of the business, but also understanding how violations, town inspections, zoning certs, transfer stamps, PTAX and other "fun" parts of the closing process work are a huge part of what we do as agents. 

I would include at least the heavy hitters like title insurance, transfer taxes, appraisal, and paying my closing agent.

@Joe S.I would say BP does a good job as well as its membersFor example when peerstreet went under people were on BP blasting them because “they did not know” they invested in unsecured debt because they noted they invested in secured loansBut if you read the literature it was clear the investors were unsecured even though the company invested in secured loans (which this structure is not uncommon) - they were called out for this.There are components related to communication that cannot be verified unless posted but most documents and property transfers (like the one I assume is referenced in the start of this post) cannot be disputed.

Given the size of the transactions generally offered on crowdfunding sites, there aren’t enough secondary trades large enough to make the economics work systematically (besides the regulatory constraints) for Broker/Dealers to be incentivized to help LPs to redeem their positions via a sale/transfer to a new investor before the end of the investment period. 

This means that I don't need to transfer random amounts of money to another account to pay a mortgage because the tenant on that property is late paying this month or other nonsense like that.