One can conceive of Ministers seeking an all-party public front, and Labour objecting to responsibility with no power.
And those that never were, such as 1978, 1991 and 2007. Prime Ministers tend to make the opposite error to that of their predecessors.
A further graft from the remnants of Labour and the LibDems might be the best way of preserving the Union and providing an alternative government to the SNP.
Nearly every observer expected the same result – a Conservative win with a reduced majority. This as found to be in error when the votes were counted.
Most produce results that are more or less what a reader of opinion polls and other electoral data might have anticipated a few months in advance.