PVD really looks to be...
Based on your request for .MY file support, I already knew PVD is not the answer to your needs. That you're satisfied with incomplete and inconsistent data from Wikipedia further indicates it would be pointless to use PVD. My comment was for Craig's benefit. And, as I pointed out, it may not suit his needs either.
Given a source for series data, PVD handles it perfectly well. I don't see any reason to suggest it handles movies but not series. But you're focused on getting data from your .MY files. PVD could do that (with a custom script), but if you have no need to change or manage that data, that would be pointless.
I think the real solution is for MC to read a wide variety of sidecar metadata formats (maybe even with a user-configurable field mapping tool)
Now
that would be "clunky."
If MC is going to automatically import meta data from an external source, what does it need sidecar files for? Sidecar files are a crude way to get information from another application with which MC cannot communicate directly, and they may be the only way to share MC data with some other applications. That doesn't mean they're an attractive common solution for getting meta data into MC.
...and then to handle TV Show metadata lookup from one of the online public data repositories automatically...
Using something like TheTVDb might satisfy users only interested in data for popular American series, but there's no one source I'm aware of that provides consistent, complete data for all series.
The irony in all this is those of us who have an interest in collecting and managing video data have found a highly effective tool in PVD. Just like MC is not for those lacking the aptitude or desire to venture beyond iTunes, it's not for everyone. But if it's used to collect and manage video data, PvdImport will pull all that data into MC with
absolutely no user interaction. Those without that degree of interest (and there's nothing wrong with that) are getting nothing.
I think the smart thing for JRiver to do is to contract with a source like AMG to provide data, and to automatically import a fixed set of movie and series data. That would make 80% of North American users very happy, as they would get a lot of good consistent data without lifting a finger. Others would be left wanting, but at least it would be something. I have no idea what an arrangement with AMG would cost, but the fact other applications apparently do this suggests it might be reasonable. Logic suggests AMG should be happy receiving a modest fee, rather than forcing users to scrape it for free. Maybe the only cost would be the commitment to include links to AMG—something which most of us would find useful anyway.