I think most people are unaware of Mir vs Wayland and the issues that Ubuntu using Mir will cause. I only know about it because I was thinking about building a tiling window manager (because I'm weird like that).
I think there is a good chance that Mir will be technically inferior to Wayland and a better chance that Ubuntu UI designers will reinvent the user experience from a phone perspective.
I think there is a good chance that Mir will be technically inferior to Wayland and a better chance that Ubuntu UI designers will reinvent the user experience from a phone perspective.