The context-menu for selected entry in the repo-list has commands Move to Another Group and Delete, but this quickly becomes a chore if we have lots of repos and want to bring some relevant grouping to them or cleanup left-overs etc.
The simplest improvement to this situation would be to allow multi-selection in the list, and to allow these two commands to be performed on multiple items at once.
NOTE: Drag-drop does not have to work for multi-selection (but it would be nice if it did). As soon as there exists ANY way of moving/deleting multiple repo-items at once, I'd say this ticket can be closed...