I am keeping a slightly flatter groups database these days. I often want to browse the items in a group, rather then use devonthink’s powerful search to find items.
It would be helpful if I could do a iTunes-ish search of my groups that would gradually narrow the groups as my search description got more precise as I entered more letters. This would solve the problem of not being able to search for groups. (If I’m correct, Devonthink’s search only covers documents and their contents, not group names).