I am setting up a site where registered users can publish items (frontend). Everything is going great and K2 is AMAZINGLY powerful, but in development I have run across a couple things and not sure if it is possible at this stage.

Limit Amount of Tags Allowed On A Single Item?
- I have made a template and I am afraid if someone goes crazy with item tagging that it could completely break my template (I understand I can turn this off but I have set Tags to be displayed on Category Item View Page).

Admin approval after user Edits an item?
- My website will allow registered users to view, comment and edit all items in specific categories. Though I understand this may be frowned upon by many of you, it is absolutely necessary with my circumstances. What I am worried about, though a low possibility, is a user editing a bunch of items and inserting useless information or worst-- deleting information/pictures.

If either or both of these are not possible, does anyone have any work around suggestions?

Thanks and GREAT component!