Now with Beta 5.0 there is Group Management.
There you can exclude a client by assigning to a group with no adlists and then
Would be nice if there was a status icon for each client on
Something like a red/yellow/green dot for no/partial/full blocking ads.
When you click on the green dot the client will be moved to the 'unassociated' group.
When you click on the red dot the client will be moved to the so called empty group with no adlists.
Yellow status has to be achieved by the user creating groups and adding clients to those groups. Is different for every Pi-hole user so can't be automated imo.
Edit: Maybe switching red and green as described above is more in line with how colors are used now (red for blocked).
My first thought was red for unprotected (danger).