I don't want a GE, unless Labour promise BEFORE the GE is called that they will Remain
That's because I'm not sure Corbyn is electable and also I don't trust him in the slightest
He could switch to a PV and then advocate Leave, which would then probably win again.
Remember, as soon as the 2016 ref result was announced, he demanded that A50 be invoked immediately.
I would prefer the HoC to vote down the WA once, then decide on Remain - if sufficient MPs agree -
and if not, then Norway++.
If they vote down the WA, there may be sufficient business flight & markets panic, to also panic the public and hence the MPs, into accepting this.
However, if the political cowardice & opportunism and hence the HoC logjam remains, so that none of the options - Remain / Norway++ / May's WA - can pass the HoC,
then I expect the HoC would vote for a PV to pass the buck onto the electorate.
Since the default if they take no action is No Deal, the HoC would at least want to cover their rears by making the electorate vote for whatever happens next.
Of course, a 50.05% majority for the winners would leave the country bitterly divided, but the HoC would likely refuse to accept No Deal from a v narrow majority and choose the other option.
btw, I think the HoC can, if absolutely necessary, vote to pass May's WA at the 2nd or 3rd attempt, whether as a result of a PV, or off their own bat, because a looming No Deal disaster has to be avoided if at all possible and the HoC can break its own conventions in extremis.