I agree this would be nice, although I think the w switch should only be required if one or more of the items has a wildcard in it, and that the w switch only applies to the item(s) that have the wildcard.

Eg: /hdel -sw table1 item1 item2* item3 item4*

The wildcard switch would only apply to items that started with item2 or item4, so item20 would be deleted, but item12 wouldn't.