Actually, the UI is alright in it's default state. Those extensions do look interesting though. I generally like using the super key to search for some programs, while opening others with the CLI. I also liked switching between active applications through this interface + arrow keys as well. Though I did have an issue with trying to navigate between programs if the program I wanted was on the other monitor. I also struggled with alt+tabbing between multiple windows of Firefox, for example. Though now that I think about it, that could potentially be resolved with utilizing workspaces better. I had issues with notifications, particularly Thunderbird and Rhythmbox. The notifications would take priority as the active window, and temporarily disable the input for whatever I was working on prior to its appearance. I tried enabling Do Not Disturb mode, disabling notifications for specific programs, and killing xfce4-notifyd through the CLI. Killing xfce-notifyd sort of helped, but would cause a weird notification that still messed with my active window. Currently, If I want to continue working or playing whatever I was using before, I have to alt+f4 the notification, which is rather cumbersome when I get an email or the song changes. Perhaps the solution is to set another shortcut to close the active window. That said, it's rather unfortunate, because LM Cinnamon seemed to handle these notifications in the same way, while being less obtrusive.