The Labour leadership don't care about the lower levels of the PS, but to protect the Upper levels of the PS they need to throw their weight behind the Croke Park concept of all for one and one for all in the PS. In practice this means the savings will come from the bottom up. The PS Union leadership are part of the same circle of self-serving chattering classes as the Quango culture brigade. Maintaining the lifestyle of this circle of common interests is the raison d'etre of the Labour leadership.
While there's enough cash coming in from the bailouts to maintain the status quo the lower levels and the upper levels of the PS have a common cause. When the funds run out we'll be in for interesting times, perhaps new or breakaway PS Unions.
It's a racing certainty that FG will have the numbers to form a coalition Govt next time. FG have a visceral loathing of SF so that combination looks unlikely. The only way that SF will have to go into Govt will be in a coalition with FF and possibly Labour. No matter what happens SF will either be a strong Junior or Senior partner in a relatively equal coalition, the numbers just won't be there for a FF dominated coalition with SF as makeweights.If SF thinks it can make significant gains at the next GE and then say it won't go into government unless it's the senior party it will have committed political suicide.