I kind of wonder if it would be worth making an ipv7 that is less ambitious than ipv6, and focuses on having an easier upgrade path from ipv4. But then we would have three competing standards...
Yeah, it might have been a good idea 15 years ago or so, when adoption was low and it was apparent that the switch wasn't happening fast enough, but now ipv6 is used enough that introducing yet another version of ip will just make things worse.