The biggest problems for me (and I suspect a large number of people) are charging rate and battery endurance. On long drives, waiting 30 minutes at a supercharger is not my idea of fun. At the same time, losing battery capacity from parking in the cold or using the aforementioned supercharger will also make things bad. I live in the Northeast US, which has a very high density of EV chargers per unit area, so actual charger availability is pretty damn good.

In other words, I wouldn't put a lot of hopes on more infrastructure adding more adopters.