I am a EU citizen, so I am hoping that should ease some of the initial hurdles of moving (although with Brexit, that benefit may not last too long). We are planning on going initially as self-sufficient status under my treaty rights, with the hopes that within a few months of moving, my wife can obtain a job in the UK. She is currently applying for a position on the shortage occupations list so the hope is that even if our EU rights go away, she can get sponsored as a US citizen and obtain a visa to live and work in the UK that way.
If you change to UK immigration rules (a Tier 2 General visa), under present rules, your time spent in the UK on EU rules would not count towards settlement in the UK and you would both need to leave the UK to apply for entry under UK immigration rules.
If the 10 years of legal stay in the UK for settlement, was still around then, you might be able to use your time in the UK under EU rules, but only if all that time you were lawfully in the UK (you being a qualfied person at all times) and
if the UK will allow EU rules to be included in ten years time.
The rules for a visa for a shortage occupation are quite easy as the UK wants these people.
It's limited number of Tier 2 General visas but the shortage occupations are top of the list for the monthly allocation of Certificate of Sponsorships.
Your visas will have end dates as visas don't immediiatley become invalid as the RCs do under EU laws.
If the emplyoyer decides that they don't want to sponsor your wife anymore (doubtful on a shortage occupation job) a new employer will not have to carry out a 28 day Resident Labour Market Test to check nobody else can do that job as your wife is doing a shortage occupation job.
For settlement, there is no income requirement for her to meet as she is doing a job on the shortages occupation list.
She can bring you as her dependant and you can work for anyone and do any job or not work.
You won't have to ensure you are a
qualified iperson at all times for you both to remain lawfully in the UK and for your wife to be allowed to work.
No CSIs to buy each as you can both use the NHS bill free even if you have exisiting conditions, with payment of the Immigration Health Surcharge. Presently the IHS is £200 a yer each, paid up front for the duration of the visa.
https://www.gov.uk/healthcare-immigration-application/overview5 years on the Tier 2 General visas and you can both apply for settlement (ILR) with no IHS to pay anymore. Not cheap, but we don't know yet if EEA citizens will also have to pay this on Brexit.
1 year of hollding ILR and you can both apply for British citizenship. Not cheap, but EEA citizens also have to pay the full fee too, even while the UK is in the EU.
I assume your wife's employer would pay the visas fees for the Tier 2 General visas?
No Brexit to worry about over the next few year as you would both be safely on UK immigration rules to settlement.
Now I have typed it all out, why would you even want to use EU regulations and have all that worry, when your wife can get you both visas with her shortage occupation job? I'm assuming that an EEA national can have a dependant visa?