I think adding a transparency slider to the personalization menu would be a cool idea. Similar to deepin, the slider would control the transparency of the taskbar in certain DE’s and would also control the Launcher’s (or Start Menu) transparency. I think this would make the feel of Zorin a lot more elegant.
There is a gnome-shell extension for that - dynamic panel transparency:
Which I have covered in the unofficial manual:
XFCE desktop on Zorin Lite also has that built in.
You can do it with KDE but it takes a bit of doing apparently:
XFCE desktop for the win baby, exactly what I am using, and highly recommended!