wow, I didn't realize that international banking has changed so drastically just in the past few years, but I think I understand why and have listed below. I think your BVI research is very well rounded and you have found a winner.
I am getting ready to do the same thing but for different reasons. I have been trading a very long time and have not ever seen anything near what is going on especially in the US markets. I take some pride in doing investment research, due diligence, deep earnings and balance sheet research (I am mostly macro). And every trade I have looked at since last June has looked very very bearish, but yet every one of them has moved higher and higher (this not even considering the WTI crude market). So, I have come to the conclusion that the Fed is long out of bullets (they really should be in a third round of hiking by now which is opposite of what they would like to do) and I believe there is an extremely high level of derision and disagreement among the Fed voting members (and non voting).
Gold charts tell me they have gotten desperate for time and are very probably printing USD in large number and buying both heavily weighted S&P 500 US equities and oil contracts (maybe close to a trillion in printing already). If they are that desperate and the market still goes through a deep repricing/price discovery process (bear market) then I feel the next step will be a combination of negative interest rates/strict market controls/capital controls to which it will be very very difficult for regular individuals to move money, access large amounts of funds, liquidate long buy and hold positions, invest in physical gold etc... This in the US and looking at DB chart I think also in the EU and probably in Japan (all of above controls already exist in China).
So I am looking at the same move off-shore you are looking at. But, regarding my own needs Singapore and/or Hong Kong may be worth the hassle and I am also looking at BVI, Dubai and Bermuda.
ie, when I say market controls, capital controls I am speaking of very similar things in place in China: (no shorting ever and at different times no selling of equities, very difficult to move money overseas, very difficult to change money, strict market intervention into things like real estate transactions, bank loans, strict Forex controls and then also, similar things which took place in Cyprus:bank account hair cuts, banking bail-ins, bank holidays etc...
I, in no way, shape or form, am willing to be responsible for the horrid management and financial history of US banks so I am being proactive.