We have a lot of professional QA folks here: They know how to verify
their findings and issues. That's a lot of overhead if someone has
to re-test to confirm a well tested bug.
So we should trust the QA who has 'canconfirm' privileges.
I don't see much overhead; on the contrary, every careful reporter,
after pressing "Submit", surely goes and check if he did fill everything
ok. Leaving the default status to unconfirmed works just like
a reminder to be careful.
A careful submitter will check before he presses the ok button.
Regards
Olaf