I must say I'm having much trouble understanding where you are coming from.
You say you are very concerned with tax efficient asset location. In just the time you have spent on this thread you could have learned absolutely everything you need to know about that subject and would be able to execute a plan yourself.
You haven't mentioned the size of your portfolio, but let's just assume it's 5MM, 50/50 taxable/IRA. If your asset allocation happened to be 50/50 stocks/bonds, you could have all your bonds in the IRA and all the stocks in taxable. If we keep it REALLY simple we could put all of the stock allocation in Vanguard Total World (ETF = VT) and all of the bond allocation in Vanguard Total Bond. Total fund expenses are 2.5M*.1% + 2.5M*.07% = $4,250/year.
From a tax standpoint you'll get about 2% in dividends from VT (50k), 80% of which are qualified dividends. Plus at age 73 you'd have an RMD of about 4% of the IRA value (100k). Plus whatever social security and pensions you have. You'll get some foreign tax credit from the investment in VT (potentially about 2k). You won't be able to get much more tax-efficient than that other than by losing a lot of money
With a 5M portfolio Creative Planning costs 42,500 per year. And if the earlier poster is correct, legal and tax services are additional fees on top of that. Plus the expense ratios of the ETFs. A robo will cost you ~15,000 per year, plus fund expenses.
You spent a lot of time in another thread figuring out credit card reward strategies. Do you think they will pay off 15-43k per year compared to spending an equivalent amount of time figuring out how to do it yourself?
A couple of other points:
Beware of MLPs. Here's a thread
retiredjg's point about getting "locked in" with specialty funds also applies to Wealthfront's "direct indexing". You'd own many individual securities. Exiting those positions would be extremely messy.
Be very careful about trying too hard to reduce taxes. As someone who bought limited partnerships in the 80s I can tell you that sometimes the best tax shelter of all is just to pay your taxes and be glad you have enough income that you have to pay them.