I think we have too many tags to list them all. Also, they are not mutually exclusive, and in some cases I'm not sure the uploader will necessarily understand them (we certainly have a lot of dubious claims of "public domain").
I'd rather see a simple choice: 1) I have created this work and agree to license it under the terms of the GFDL. 2) I have not created this work, however I am permitted to incorporate it into Wikipedia under the following license: [text box]. 3) I have not created this work, however it is public domain due to the following reason: [text box]. 4) I have not created this work, however I believe it can be incorporated into Wikipedia under the doctrine of fair use.
For those choosing 2 or 3 (which I assume is a minority), we can have new tags which can be made more specific after being analysed. We should also have a text box for author information.
This would go a long way toward speeding up the tagging process. I'm not even sure if the rate of new untagged images is greater than the rate of image tagging at this point.
Anthony