Efficiency is always a very attractive solution. In the PA climate, is air sealing the same sleeper issue it seems to be in the hot-humid South? More insulation is great when the house is well sealed, in a prior Texas house I had more insulation installed and did not see *any* difference in electric consumption. I believe that house was very leaky and that more insulation will do little good until the house is better sealed -- in my experience anyway, being a homeowner who didn't know the basics in Texas.
Sounds like this forecasted rate change, besides irritating millions of homeowners, is going to light a fire under some to improve energy usage.
Best of luck -- Pstu