While most might foresee the Twizy category go further into the car category, I sincerely hope it remains in the quad category. There are serious advantages in being there when it comes to learning to drive. The other is weight - Twizy is minimalist in nature, and gives you the essentials in protection, range and utility as a quad. Parking sideways is a big plus! To be honest, the designers and planners couldn't have done much better for the design goals they had in mind in creating this category of vehicle.
If I were to hope for improvements, maybe using the battery improvements/changes from the Zoe (22KWh --> 40KWh for the same form factor) and make it available for Twizy owners. Range will make better. I wouldn't expect much more than this for a niche market vehicle. If I were Renault, I would hire Kenneth to manage the electronics for them, and install a factory insane mode on the dash