Further, most of the current meta data fields are fairly solid for the most often used fields, but I often find that it would be nice to have fields for Season # and Episode # for television shows.
The last “big” piece that would be nice to have is a quickly usable ratings field of sorts so one could provide a rating 1-5, 1-10, or 1-100 rating field? Maybe it could be a simple numerical data field that calculates/displays a rough 5 star-based scale? h-review markup could also come into play here as well, though it would be nice to capture the raw data even if there is no UI display built for it.