I don't agree with much of what The SNP have done in Government particularly in relation to law and order issues, increased centralisation etc but I've got to admit they've done a very efficient job and many voters trust them. So it's highly likely, they'll continue to be The Gov after 2016.

Unfortunately, The Tories, Lab, Lib Dems etc haven't had that high a regard for Holyrood until recently. The SNP have always put up their "first team" for election whereas the other parties have focused on Westminster and seem to have relied on their "reserves" for Holyrood.
This is an attitude which will have to change.