Sorry, i am talking about the link "add-ons" in ACP.
Without an add-on, you have a long list with all add-ons.
With the add-on, you have the same long list but shown on three pages.
I guess it would be better to have three links in the side panel:
installed
not installed
deactivated
and every link would load and show only the part you need.
Why? Because sometimes I have 100 add-ons on this list, and sometimes it is not nice to work with, especially when the net is slow.
(Happens sometimes here)