If one needs a replacement non corp os...
In a pinch it isn't bad...
It is functional.
Their team is muscling ahead....it is now rougly inline with 16.04 ...
But it is the all the app creators and maintainers that have to shove their 15.04 apps up to 16.04 ...
That is something else...and that will take however ...(if ever ...for some)...it takes...

Between now and that unknown...
I am not waiting...
I am enjoying Bliss on pc and nexus 5 (oreo 8.1)...and am getting used to Maru...(oreo 8.0)....
I just wish I could change the de and wm in it...but at the moment ....that isn't really doable...perhaps in the soon to be released 8.1 it may...