I've tried many electric bikes over the years but the one I own and use most includes built in fenders, a welded on rear-storage rack and a water bottle holder. These may seem like simple considerations but at the end of the day I want to stay dry, I want to avoid noise and rattling and I need water. My electric bike also uses a hub motor which I feel is more balanced and durable. The motor placement and computer style also just look more like a bike and that helps keep away unwanted attention. This bike really fits my lifestyle!
Everyone's different and there are lots of bikes to choose from out there with more coming every day. I hope the reviews on this site help you make an informed decision because electric bikes are good for the environment, healthy to ride and more social ways to get around than cars. Good luck!