I think Labour have actually done better than it looks yes I think they will (probably/most likely) lose it but losing all of scotland and only 25 seats so far labour took many seats from the Lib Dems.
A bit of focus and a new leader and 2020 could be a very interesting event especially with Ukip getting a huge voter backing.
If the SNP vote holds next election they have no chance of getting in again.
They don't, and never have had the popular vote South of the border.
Even with a huge swing in public opinion from con to lab the best they can ever hope for is a lab/SNP coalition if things stay the same in Scotland.
They have relied on Scottish votes for decades, they can't get a majority with out them.