I just dropped in to look at the DNA Results database. Although I am not knowledgeable about Irish Septs, I observed what I guess to be a classification scheme in progress, to try to organize them.
I ran statistical Primary Component Analysis (PCA) on the STR alleles data to get a "Birds-eye" look at it. The two charts below show a lot of information, but there are two key points to note: at the Y67 level, (top chart) we can see testers scattered all over the place, without any patterns by SNP haplogroup assignment. Out of over 200 testers, we can only account for less than 25% of the total variance, at the Y67 level of testing.
Translation: SNP haplogroups at Y67 need more testing, at least to the Y111 level.
Alas, even that won't be enough to allow serious attempts to group by Septs. The chart labelled "Y111 Testers in Project" encompasses the current Y111 testers in the project database. Yet they only account for under 19% of the total variance.
Translation: unlikely to statistically explain all the variance without nearly everyone in the project testing to Big-Y. PCA is a powerful statistical tool, and there are simpler tools that might come close. But my take on it is that it is unlikely serious progress can be made without major additional testing.
Not much more I can offer about future efforts, aside from this "preaching" about Big-Y. Your money, your call. It will take the Big-Y to get the Big Picture, is my reading of the charts.