But it is clear that, everywhere in Europe, time of classical social-democracy are over (the most evident proof of it is the rise of D66 and decline of dutch social-democratic party). Left, in the future, will be divided into podemos-left front- syriza likes, and social-liberal on the other side.
Classic liberalism and classic social-democracy are dying.
There is a third option of left wing populism - sometimes combined with/attached to nationalism as in Sinn Fein and SNP. This option will likely prevail in Eastern Europe.
If you only got Social Liberals and "movement leftism" (dunno if there is a proper term for it) you more or less abandon the working class/poor to right wing populists.
Also, classical SD parties will survive in one form or another in the Social Democratic core areas for a long time. The death of Labour or SDA are not around the corner.
Where does Green parties fit into your prognosis?