I think you're going a bit too much into project fear nonsense there
the EEA- thing is quite realistic... we get migration controls in return for a hybrid deal and unfortunately the passporting of financial services is one area they'd like to target... that does not however mean game over for the city, it is just one aspect of it... it would certainly be a bit of a blow and lead to job losses but if you think it turns us into an insignificant little country then you're way off the mark. Paris, Dublin, Frankfurt aren't necessarily going to be popular places to work for traders... lower pay and bonus caps for a start won't attract talent to EU cities. London still trades with the rest of the world and you're only talking about a part of the sell side banks that needs to deal within the EU.
It is a selling point for the SNP though - if Scotland got independence then you could just as easily see Edinburgh strengthening its financial sector, English speaking for a start.
They dont even have to offer EEA- though, that's them being generous. When we hand in article 50 the banks will decide to up and leave on their own, and there's nothing the UK can do to stop them.
And I know its pointless to argue, but losing the London financial center would not be a bit of blow.
http://www.telegraph.co.uk/business...ll-cost-the-uk-if-bankers-start-quitting-the/