Leftie's right on the price. I doubt there'd be any sort of battery discount. If so, this would've been the first I've heard of ever since the YMMV goodwill program went away then Nissan raised the prices significantly.
I agree about Bolt's front seats. They suck on the '17. They still suck on my '19. The back seats are oddly, ok. I've sat in them on another Bolt being used as an Uber/Lyft for maybe an hour. I've also sat in the back of mine for over an hour while working on my laptop while charging. Was fine.
At https://mynissanleaf.com/viewtopic.php?p=564799#p564799, I posted about getting a front seat cover that has downsides (body pivoting too much). I still use it, FWIW.
Apologies about not being able to post more about Bolt. Been busy and real tired. Slept over 10 hours last night. OP can just skim for my posts in the Bolt thread starting at https://www.mynissanleaf.com/viewtopic.php?p=546542#p546542.
I noticed OP said "I'm looking to buying a new leaf before next fall." By that point, unless the Federal tax credit is revised/there's a new law, no GM EVs/PHEVs will be eligible for that tax credit after 3/31/2020 (https://www.fueleconomy.gov/feg/taxevb.shtml). It will be interesting to see Bolt resale value. Will there be a flood on the used market of '17 Bolts coming off lease? AFAIK, GM was only doing 3 year leases back then. 1st Bolts were sold in mid-Dec 2016.