There was an idea about this in 2022 and Iād like to reopen it since it would be super useful. Attaching the active plugin window to one of the panels (probably the right one) and making it collapsible would avoid having to constantly move the plugin window all over the screen (or close it and then having to search for the plugin again). It would also be super useful to have that panel be one just for saved and most used plugins!
original idea: Collapsible plugin panels