An experiment:
https://bkhome.org/news/202111/experime ... t-rox.html
A further thought: could put the drive icons into the bottom tray, and move the running apps into a separate tray.
The photo shows three running apps, firefox, geany and rox, but they could be in a separate tray. The adavantage of this is when no apps running, such as at first bootup, the running-apps tray will not exist. It will only grow as apps are launched.
That would result in a desktop with just two trays, top and bottom, for leanest and uncluttered first impression.