Only thing is that you are not negotiating with 27 states, your negotiating with 24 states and the peoples of 3 states, France, Denmark and Ireland. Which is exactly why the deal DC was offered by the EU was so poor - they did not want to open the referenda can of worms... no doubt Le Pen would make it a referendum on the EU as possibly the Danish far right and no matter what you offer the Irish it would always be worse than what they currently have under the Common Travel Area.

If don't expect the EU Commission will have much willingness to go beyond the offers that do not involve a referendum:
- EFTA with no access to the single market
- EEA access to the market but with FMOP, budget contributions etc...
- WTO trading rules.

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"There is no passion to be found playing small - in settling for a life that is less than the one you are capable of living." - Nelson Mandela