Better maintenance support from dealers! My SR is around 18 months old. I called the dealer I bought it from for the 1st maintenance (per owner's manual) and was told, "oh, there's no scheduled maintenance." WTF? Called a second dealer (I live in the SF Bay area, so there are several) and they seemed to know what I was talking about, so I've taken it there for initial and 4K maintenance. Unf, my kickstand started screaching and acting funny not long after the 4K. I looked in the manual, and it's in the list of things to be checked. Clearly, the dealer didn't do this. I sprayed some lubricant, and wow, what a difference. I'm now wondering if *any* dealers actually pay attention to Zero's maintenance schedules. And what else my local dealer didn't check.
2nd wish, of course, is longer range/faster charging. I expect this will greatly improve during the next five years, as EVs (two and four wheel) become more common-place, thus spurring innovations in battery technology and reductions in pricing. In the meantime I've bought a Honda CB500X for multi-day touring. Great bike -- but not nearly as much pure fun as my SR. Unf, there aren't charging stations (that I know of) in any of the national parks/forests in California.
That's about it for me. Unlike postings in other threads, my 2016 SR has performed flawlessly.