Outwith the Old Firm and Shinnie, are there any left backs markedly better than Hammell in the SPL? None leap immediately to mind. Given his age, should we looking to develop a successor? Of course. Will it be easy to find someone as consistent? Answer would have to be no.
As Lobey_Dosser points out, the prospect of losing McDonald and Pearson and trying to replace them with players that will contribute as much is a lesson that while we'd like to replace guys the wrong side of 32, it's not always that easy...