is it possible to just download a screenshot and not have the game box in the bottom left corner? I disabled video already.
Yes, but you'll have to modify the artwork.xml and leave the screenshot only as the final composition result.
can I use it to rerun and just download artwork? It pulled metadata for most everything but left a lot of the artwork blank.
Yes, you can choose a different scraping source and then re-run the scraping to get new artwork, maybe it will be found in another source.
a lot of the ROMs ended up with (U) and SMD in the names. Any way to disable that?
Do you have an example ? You can choose to use the filename as the name entry in the list, ignoring the name returned from the scraping source or the option to remove brackets from the gamelist names.