Hmm, based on my experiences.....

I would love a 20-21 inch frame cruiser with full suspension that you can turn on and off, N360 hub, coaster brake, shaft drive, the tires i have now are amazing, so just add in some tire liners (29 inch wheels with same tires would be nice too), front dyno for 3 headlights and 2 tail lights, steel collapsible rear basket, 25 inch swept back handlebars (so it can fit on train) with lots of leverage and upright riding, electric motor built into bottom bracket, integrated battery pack, and of course a big fat comfy seat!

- Andy