for what my word is worth, please let me put in a vote for LiFe - i know they're not as energy dense but you may not need as much armoring on the pack. you can say its good for 2ce as many charges and uses a safer battery - which can increase perceived value.

let the ultra-modders swap in LiCo's on their own - they'll do it anyways.

there's a techcrunch-story-future that i'd really like to see you avoid! :(