Add option to hide windows preview from Pager and only show small squares instead in pager applet (see http://www.ericsbinaryworld.com/wp-content/uploads/2008/06/27dec_kde.png for example). This is regression in comparison to KDE 3. It was possible to opt out of showing window boundaries in the pager apple in order to save space (especially in dual-screen situation when desktops spread over two monitors). Current situation is shown in bug #392483.
In other words, it would be nice to be able to hide the minimap and only have the ability to switch between desktops.
*** Bug 396495 has been marked as a duplicate of this bug. ***
I would like to see this as well. There is an alternative pager available that offers this functionality, which labels each Virtual Desktop using its name rather than its number. For those of us who name our desktops, this is extremely useful since we don't have to remember what each number stands for. https://github.com/wsdfhjxc/virtual-desktop-bar Unfortunately this widget seems to no longer be maintained by its author and there is no Wayland session support; one fork does introduce Wayland support... sort of. I believe this actually is the current (as of 5.28) behavior of the default Pager, so the only thing needed to resolve this regression would be to suppress the minimap.
I've just added an option to disable window previews in the pager: https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/2427 This will land in Plasma 6.2.