As I'm importing an old blog that didn't have tags I'd like to add a tag field to the power edit template.

Or even a separate tag power edit screen that shows us the titles of entries, a tag field and a tag cloud below (like in delicious) so that you could click on common tags and add them to the field.

I know I can do some simple batch editing of tags by selecting entries in the list view and using the pulldown tag menu, but full editable fields in the power edit view would be much more preferable