by letter sounds good. Then it would be fine for me and also an improvement compared to the app scope now in my opinion. Here is an example for what I meant posted by @PhoenixLandPirat in https://github.com/ubports/ubuntu-touch/issues/838:
TBH I like almost everything that how is now Unity8.
My usage (I'm righthanded)
To launch apps: 100%of times I launch favourites apps from launcher.
Apps that i don't usually use i launch it from scope (obviously xD).
To change apps: Usually use the long gesture to select to the window I want to. I don't use often the back to previous window for now. Maybe i would use more often the short feature if there would be more apps that uses multiple windows like dekko2.
I like the idea of the drawer and the idea to change apps scope to drawer since we can't mantain scopes. I'll miss scopes but @dobey have a point in the explanation to remove them
The only thing I would change (not sure if the problem persist) is that in desktop mode the right edge is very sensitive with a mouse and that the invocation of multitasking with right edge with mouse was very statick in my opinion compared to gesture animations.
Sorry for my English, I hope you can understand the message