Airfix, you have astonishing patience here... I doubt I could match that!
I voted Brexit for similar (libertarian) reasons as you. I largely ignored much of the nonsense that was promoted by the very poor campaigns run by both sides.
To my mind, leave ran a pretty poor campaign, but ultimately the remain campaign was even worse. You can see project fear alive and well even in these forums, with people declaring that the EU will somehow punish us for being nasty enough to leave the EU (!). In fact, the EU have a really tough problem; if they give us a good deal, more will want to go. If they give us a bad deal, it will create further divisions within Europe, particularly in those countries who are politically closer to the UK (e.g. Poland, Hungary, Czech Republic). While the EU has some trading clout through size, the divisions within it complicate things in a way most people don't appreciate.
Like you, I would be happy with an EEA type solution. This would remove us from the hated CAP and fisheries policies, which is a massive gain as these EU policies are regressive, protectionist and expensive. Being out of CAP alone should take around £3.8 bn from our EU contributions. In the short term there will need to be continuity funding, but gradually we can embrace modern efficiencies in agriculture that are largely blocked by the EU (e.g. GMO) that will enable subsidies to be reduced, encouraging international competition.
The EEA deal is a business friendly solution and given how long it takes the EU to negotiate the simplest thing, it is one of the few options viable in the timeframe.
The exact form of the agreement may be "EEA-plus" depending on what options we care to negotiate. One proposal was to negotiate EEA plus some level of input into single market legislation, which is an interesting option, but would probably require us to contribute more.
Another possibility is EEA plus some restrictions on free movement, this doesn't appeal much to me - I'm white collar libertarian so have no issue with free movement, but recognise that not all Brexit voters did so for the same reason; the blue collar voters in the Labour heartlands want limits on immigration and it is important to recognise their concerns, even though my preference would be for free movement. (The extant EEA emergency brake on immigration is a pragmatic and sensible article - that would be enough for me, but perhaps not for others)
Fisheries policies are an interesting point - the French fleet will be decimated if denied access to UK fishing waters, and this will be a key negotiating coin for the UK side.
There are some very real and interesting points of negotiation but sadly it is almost impossible to have these discussions with the angry remain side. The example you give here is a good one - you make the point about limits on VAT rate which have prevented the UK government from enacting certain policies. Again there are interesting points here - some years ago energy bills were going up due to market conditions, but also due to government policies imposing consumer subsidies on bills to support renewable energy generation. The government wanted to cut the rate of VAT on energy to offset the cost of these subsidies - but couldn't because of EU rules. Another example are feminine sanitary products (ok ok tampons) which the UK gov wanted to axe VAT on, but again were not allowed to by the EU.
So there are lots of interesting policy options around VAT - including the good example you gave of the consumer stimulus policy by Brown. People stuck with ideologies cannot see these policies and can only see the black and white false dichotomy of "under 15% forever" and "over 15% forever". Under such blinkered views no sensible dialogue is even possible.
The UK economy is strong and I have no doubt that the UK could thrive within the EU or outside the EU. While I am supportive of working closely with our European neighbours the EU is a seriously broken organisation - witness the ineptitude of the handling of the Greek crisis - and its luddite and protectionist views, for example, on agriculture, we are probably best out.
I only come by this forum occasionally these days so I'll not likely respond much on this thread (I don't see the value in it) but best of luck presenting the voice of reason here