Given the suggested feature cull, I'm surprised that no-one has cried "POLA" …
I might guess why you'd like that – and (yes) when I wander away from the computer and think about enhancements to mount tray (or whatever it might be called), I do think of handy features that might be retained or added.
Mind wandering, I mistakenly think of the tray in isolation.
Of course it's not a cull, not even when (above) "nothing" is an option.
Allow a handful of things, including The File Manager and SysAdm, to reign supreme! Make 'em great.
Ensure timely, concise orientation for each user of a system (this overlaps with a separate topic).
Food for thought
as seen in post 4 under Can’t browse network mounts.
If I recall correctly,
remote:/ is (in Dolphin) a predefined place, a holder for three classes of remote place. I haven't toyed with those places in a working environment but at a glance, they make sense.
In the screenshot below:
/media/ place was made by me
- a sidebar predefined Devices heading, which I ignore.
(The 100 MiB hard drive is not a drive, it's probably the EFI slice of the internal drive. And that list of devices seems to omit devices such as the USB flash drive that's currently present (with no mounted file system), so I'll continue to ignore the heading.)