I am kind of disappointed that France was put forward as an "easy" nation. I really wanted to take them out for a spin. But that did open up the chance for me to play as Burgundy. I loved Burgundy in EU3.
Anyway. So far I'm considering:
1. Austria for that sweet HRE experience.
2. Muscovy for that cool uber expansion experience
3. Venice and make my fortune as a merchant state.
I don't know who I'll pick. Alternatively, Milan is always an option.