Maybe it would be good move to equip this part of the UI with the checkbox "Show offline clients", or perhaps implement yet another tab - so it would be possible to configure the clients that are not online, by specifying their icon, internet access, and so on. Some dropdown lists in other places do have the option to show the list.
In fact, the presence of the tab "Online" probably means that there must be a possibility to see "Non-online" somehow as well.
A related feature might be to "forget" some of them. There have been quite a few posts asking how to delete old entries, and some people posted scripts doing that, so maybe Merlin could implement something like this:
In fact, the presence of the tab "Online" probably means that there must be a possibility to see "Non-online" somehow as well.