Interesting points, Bob.
1 Personally I pay my tax in Greece, not in the UK, so I can't really invoke the Boston Tea Party Syndrome* to justify having a vote there. I also have some sympathy with the concept that, after being away from the UK for many years, I don't really have any association with a constituency there. Since MPs are supposed to represent the interests of their constituents perhaps the UK government should consider having one MP to represent ex-pats, or perhaps ex-pats who still pay tax there, and for whom only ex-pats vote? Currently each MP represents about 100,000 people so it wouldn't be out of the way to have one MP to represent 2 million? I do think we should have a say in issues, like Brexit, that directly and potentially massively affect our lives.
2 I agree that healthcare is an issue of concern. I currently receive healthcare through IKA paid for by the UK under an S1 form. I receive a UK State Pension and a Greek IKA pension, since I worked both in the UK and Greece. If anybody else is in that position they might find it useful to read REGULATION (EC) No 883/2004
, Title III, Chapter 1, Section Section 1, Articles 23, 24 and 25. If my interpretation is correct we should receive healthcare directly paid for by IKA. If we lose our S1 coverage it should be possible to get continued healthcare provided by IKA. That would not apply to anybody who only receives UK pensions.
3 Varying exchange rates are a fact of life for anybody who has income in one currency and expenditure in a different one. There are many reasons for Sterling to lose, or gain, value against the Euro, Brexit is only one.
* PS The tax that lead to the Boston Tea Party was a tariff of 3d per pound on tea exported to the USA from the UK. It shows how destructive tariffs can be. What is stranger is that previously tea exports from the UK to the USA had been banned. Allowing them would have brought down the price of tea in the USA even taking the 3d tariff into account. Opposing them was a purely idealogical action that was not in the best interests of consumers. Obviously that would never happen in these more enlightened times?
PPS For anybody born before 1971 3d means 3 old pence and was £0.0125