In view of the fact that Manjaro already has a nicely customized KDE implementation, my suggestion points to the possibility to make this KDE implementation even nicer by:
Defining at least one further KDE activity and presenting an Activities overview in the default control bar.
This Activity, for being useful to everybody may be called "System configuration" and have the following features:
(i) A cheatcode wallpaper with the most common command line commands in the spirit of https://i.imgur.com/7FB7tW4.jpg
(ii) An open Konsole window
(iii) Shortcuts for Octopi, Manjaro tools, KDE Settings, ksysguard and a working sudo $file-explorer ... in the Window bar.
Installing and activating Redshift Control (when Apple introduced this recently everybody says 'wow' but we could have that for years already ...)
I think that everybody new to Manjaro (or Linux in general) would recognize these features as being both rather unique and useful.