If you have several displays and had to access any one display (not the others) it sucks when you look at the taskbar and it’s just not there. If there is a taskbar there, the application launcher and task manager is not in sync and may be missing what you’re looking for (especially favorites).
Is there a way to go to a new display and literally clone the wallpaper and taskbar (including widgets)?
But not just clone it, change one and change them all? Keeping displays in sync with a main wallpaper and taskbar?
Yes, that’s what I do. The downside of that is if you change something in one taskbar you’ll have to do the clone process again for each display. Afaik there is no feature in the works for an “attached / synced clone” as in a clone that stays synced with the primary panel.