I prefer the idea of being able twist the throttle forward to get an increasing rate of regen. It could double up as reverse if the bike is at a standstill.
Now this IS a good idea! I had a test ride on a vetrix (however its spelt) scooter that has this feature and I really liked it, and its also intuitive. I also like the reverse idea.
If moving forwards when applied it should bring you to a stop.
If stationary when applied it should reverse you.
For my attainable wish list...
1) above regen/reverse
2) optional fairing (for commuting not racing.
3) consolidate reliability.
Zero will put the biggest available battery without needing to ask. Its a stated goal.
Zero have just developed a new motor, so there won't be a bigger one or water cooled anything as this is against there motto, so why ask?
If you want something like an LS218 then buy it not a zero, but don't expect it to be cheap!
Zero are aiming at an affordable electric bike - so its got to be simple.