Specifically, doing a reset on the $dbh should probably delete all the added-on attributes.
What do you mean by a 'reset'? Are you refering to the 'mock_clear_history' attribute?
Plus, I would still like to see a way of mocking a given DBD.
Well one of the things I know lachoy was trying to do was to keep DBD::Mock in a single file, so that it would be easy for other authors to include in their modules (and not have as an external dependency). So I would be hesitatant to start going to crazy with DBD::Mock::MySQL, DBD::Mock::Oracle, etc. if I can avoid it. However, that said, my experience with anything other than DBD::mysql and DBD::Pg is limited so I am not aware of how different other DBD's can be. If you have any suggestions/insight into this I would love to hear it.