1. Reject it for two main reasons: Firstly, because of the conduct of the Prime Minister from day 1 to date – not out of spite, but because she was not willing to compromise for 3 years, therefore her supposed openness now cannot be trusted – the one and only Prime Minister in British history to be found in contempt of Parliament. Secondly, as has pointed out, she will not proceed to the 2nd stage of the negotiations, therefore, the promises made to date would be irrelevant tomorrow.
2. Reject Brexit by committing to binding any deal to a People's Vote – the PM's deal vs Remain. (Which also addresses Q3 and Q5)
The only way we can build on the Brexit motion is by evaluating the premises upon which the "people's will to Brexit" was established and compare their validity to Labour's desire to affect change, as opposed to deliberating damage control – such as the PM has done to date.
The four main objectives that influenced people to choose Brexit were – taking back control of our laws (1), borders (2), money (3) and having a better economy (4).
To date, the only argument that remotely stands with regular folk* (people who accept alternative view points, instead of ardently digging into their beliefs) is that of immigration control. Why? Because as has been made abundantly clear (and as we must make the case for) Brexit means a hit to the economy under all its forms – hence the leadership's desire for "a" customs union and the PM's uncompromising botched deal. A constant loss of GDP annually, for decades to come, as our soft power gradually diminishes. The other argument made was to take control of our money, yet few knew (and many still don't) that as any organisation (EU and UN and NATO...) membership fees represent operational costs, and ultimately the benefits that the single market combined with the customs union and all EU structures thereof – greatly empowers us, both individually and as a nation.
The soft power that we gain as members of the EU, provides for a significant leverage when sitting in the UNSC and vice versa, when sitting on the table within the largest free trading area in the world – as opposed to outside the door (like one Theresa May). And I have not even begun to scratch the surface of the ways through which the EU makes us stronger – for the ordinary folk the least would be, via free, frictionless and quota free trade with 100+ nations worldwide.
Lastly, taking control of our laws – considering the negligent amount of actual legislation that has been introduced via the EU when compared to all legislation done to date, it could be argued that it is our laws that are being translated into EU laws, as opposed to vice versa. Combining that with the fact that we do have a veto within the European Council as well as a very strong as well as influential MEP representation within the EP, the very idea of taking "control" of our laws seems baseless and void of reason.
Immigration 'control' mechanisms exist, should we choose to utilise them.
Labour must echo that the very basis upon which Brexit stands – the very pillars upon which it was built on – are unsubstantiated fantasies of a past that somehow would transcend into a future that would supposedly "make Britain great again".
Reject Brexit, not because we lack a backbone, but because united we are stronger in making our planet and communities flourish and children's futures possible.