You got your reel tangled with that wild cast imo.
I suspect nobody else in the UK parliament could negotiate a demonstrably better deal than May has managed.
They are either all deluded over their prospects post Brexit or they are colluding to somehow backtrack to get to “Brentry”.
Nobody in their right mind in the UK Parliament can think a new Tory leader or a change of government and a new Labour leader will improve the Brexit outcome.