My two cents:
ZFS and ZSys: I love these. But, AFAIK, they never made it out of experimental. Also, the new installer for 21.10 doesn’t propose them. Are you still supporting them?
Bring back Unity or switch to KDE: I think it’s pretty clear by now that GNOME is moving away from what Ubuntu wanted for its desktop environment. How many extension do you need to maintain to make it resemble a regular desktop that most users are familiar with? How many tweak tools do we need to access the basic settings we expect to have on any OS? I liked Unity and I would love to see it back. However, KDE is getting a lot of traction nowadays and it can do almost everything Unity could do and even more. Maybe it would be easier to sponsor KDE than resurrecting Unity.
Snap: I love them and I use them. But there are some pain points I would love to see addressed.
- Disable automatic update (or make it optional). I would rather see the snap updates along the system updates so that I can choose what I want to update and when I update it.
- Offer a finer grained sand boxing. My web browser only needs access to my Download directory, not my whole home directory.
- Please make it 100% open source. That would encourage other distributions to adopt it. It’s in everyone best interest.