Sorry to be the bearer of bad news but I'm afraid this is nonsensical fudge from the UK Government. Essentially they've changed the language from earlier, but not the approach. Brussels won't care tonight, but when the party dies down... 1/
Starting with the 'common rulebook'... there's no such thing, the single market is a continually evolving body of legislation, not a few rules you can commit to by treaty. The sentence "these rules are relatively stable" is truly ridiculous 2/
Others will be better placed to comment on the legal section, but I'm fairly sure that the explicit rejection of ECJ primacy is also a deal breaker when it comes to frictionless trade / single market 3/
The Facilitate Customs Agreement is presented suitably vaguely so no complaints there. Something for both parties to work towards over the next 10-20 years... 4/ 
Good luck with this on fisheries while trying to maintain a close relationship with the EU... 5/
As predicted, the independent trade policy is the sure sign that this is fudge. Even though the commitment to the Future Customs Arrangement is vague. CPTPP is new, and contains an annex on transparency in NHS drug prices which will be controversial 6/
We already know that ending the jurisdiction of the ECJ has huge regulatory consequences, and is another sign that this is pure fudge 7/
Finally and dropping back into services, alternate arrangements with less access, see the excellent @csgmoore article this morning politics.co.uk/comment-analys… 8/
Conclusion: Voluntary alignment to goods regulations starts to recognise what's needed to prevent a border, but mostly this is providing extra detail to models already rightly rejected by the EU, and ignoring the fundamental choice the UK faces 9/ end
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Another twist. Combining various comments it occurs to me that the whole text is also potentially compatible with signing up to a Northern Ireland only backstop and then having a deep FTA while claiming a customs partnership for the future. This paragraph is pure fudge.
I'm being more critical than others. But consider this - if Turkey or Ukraine presented this document to the EU and asked for an open border do you think the EU would be ok with that? Don't all answer at once...
