As a generic dummy on the internet, I'm happy to offer up my 2 cents:
1. Public investment in R&D for better (cheaper, more flexible and powerful) transformers
2. Solve the residential storage installation cost. The procedure needs standards so it can be taken out of the hands of electricians
Notice that both my thoughts gravitate towards DER/S. The (probable) difference between us is that I think rooftop PV is *such* a great thing that it mitigates my perceived disadvantages of distributed storage, so I'd like to improve distributed storage. And like you, I am no fan of my local utility.