I think the next generation LEAF will be more feature rich than the Bolt (radiant drivers heat sounds really exciting), and it will probably offer a more comfortable and premium interior- but my experience with how Nissan handled the battery degradation issue tells me that I really shouldn't go back to Nissan if a competitive product is available from another manufacturer. The corporate response to the battery degradation issue was a huge disappointment. Frankly, I don't trust Nissan, and they have a long way to go to rebuild that trust.
I love my LEAF, but I'm glad it's a lease. If I can love this car in the condition it's in, I'm sure I'll love the Bolt even better.
2012 Nissan LEAF SV
20% degradation in 42k miles
Leased 5-17-2012, Returned 1-15-2016
2017 Chevy Volt LT
Siren Red Tintcoat