It really is unchartered water. May has survived till now because none of them fancy it. It is very frustrating. I am a remainer but there is no leadership on that side. My suggestion would be that they all get together in a cross party movement and map out a route you will have the bulk of Labour,the Nats,Libs, a number of tories and possibly the kneecappers. It might be enough.
It clearly is uncharted water. So, bear with me...
The best, probably the only reasonable outcome right now is May's deal, not despite nearly no one being content with it, but because no one is. Funny, no? For if one side were content and gloating, the other would not rest...
If the deal falls through, expect all hell to break loose. I cannot see May surviving it, or her government, for that matter, even though the way towards a new government is stony. There catastrophe awaits in the form of a new government voted in with the expectation that a new deal will be negotiated, while the EU makes it clear, there is not going to be a re-negotiation in any meaningful way. That is setting things up for failure.
The worst of all worlds, I am convinced, would be a new referendum. All the demons haunting the first campaign in terms of xenophobia and anti-EU resentment would raise their heads again, just with triple and quadruple the intensity.
The "kneecappers"... Haven't seen that one in a while. I am grousing what a few guys in NI losing their temper over a hard border to Ireland might mean for The Troubles.
Of course, all said right now should be taken with a grain of salt. Make that a block of salt. Including everything above. Like you, the most deplorable thing right now is the callous, cowardly absence of leadership on the Remain side - for going up against the rightarded firing squads in the press is no one's fancy.