It would be very useful to be able to search for all records within a particular hierarchy. This would enable scenarios such as finding all accounts anywhere in the account hierarchy that contains a specific account, just like the Above and Under features except all inclusive.

Alternatively, and possibly a more flexible option would be to enable the option to specify a Join Operator to use the Above or Under clauses instead of only joining where link from field equals link to field, so that we can construct such a query manually.