Well summed up, I'd take issue on the financially neutral, because we are already at 3.8% unemployemtn and anything under 4% is considered full employment, so can't see the savings in social security, plus those damned immigrants actually contribute a significant tax yield.
I guess the argument has moved on from if we leave (we are, though i did read an interesting view the other day that the EU may collectively come to its senses and realise that it would be worth changing its approach and offering an improved deal to the Uk IF it voted to remain in, unlikely though, one sure thing about a collection of humans is that it takes time and usually history before they begin to recognise what could have been achieved and even then some remain in denial) to what the deal and relationship will be when we leave.
Its this debate (hard soft or slightly floppy Brexit which is crucial and it will i think end in a result which the Brexit side will think they have not got what they wanted other than the fact the Uk left the EU, I say that because the economic interdependence - in all areas of the economy is so interlinked and interdependent that some sort of compromise is essential or a substantial part of the Uk and european economy will be ****ed!
As fr freedom and control, mmm it will be in name only, for me the big plus of the Eu was that it could and did regulate companies and global corporations (yes I hear you say not as well as it could ahve done but more than those organisations liked) such is the nature of the world today that a single government is actually quite powerless against the big corporations - be punitive and they will simply move jobs etc elsewhere, plus of course they have such financial power that they can lobby (or buy influence).
The notion of sovereignty and freedom is one which only those who yearn for the days of yore actually hold dear and the reality is that a single nation is not strong enough to operate on its own - one reason why the SNP will never in my view achieve independence, yes an independent scotland sounds sey, but the reality is they would be a lot worse off and most Scots know this.
So welcome to Brexit
We will obey the same laws have largely the same regulations, adopt many that eminate from the EU, especially those which we have to in order to sell goods there, replicate subsidy that the Eu provided, find we need foreign labour to keep our economy and services going and more than likely suffer a drop in the standard of living but we will be "in control"!