Is there an easy way to tell if geometry has been imported from software other than Inventor? If not, is there any KoP or firstcadlibrary.com models that would result in a point deduction for the Autodesk Design Competition?
yes if on the part under the model panel there is a base 1 listed that means there is one that is what the imported part of the model will be called for example the jag that you get from firstbase is imported and then they added some extrusions to it so it looks right.
If you use imported geometry you could use the free Feature Recognition from http:\labs.autodesk.com to rebuild a feature history tree.