MediaBin becoming a potty! tips needed

System

We opened our production mediabin to our internal users, trained them, etc - but with over 35 users we are finding numerous issues when uploading files

1) users are using different naming conventions per department for the insertion task metadata forms we created

2) users are not adding/associating the associated release forms, which we demanded they do (we need to have accountability for everything into mediabin)

whats the best way to handle this? my manager suggested some kind of teamsite workflow w/ a review step?

i.e. creative person attaches files submits a workflow > attaches files and release forms > some1 reviews/rejects > if approved add the asset/release form/metadata into production mediabin