I mentioned this in the Support forum, but thought I'd log it here as an official feature request, in two parts:

Part One:
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I'd like to see more information imported as part of the metadata import/editing process. Specifically:

TVShowName
SeasonNumber
EpisodeNumber
Network
MPAARating/ContentRating
DateAired/ReleaseDate
LibraryDateAdded

At a minimum, these additional fields should be usable by Action and Smart Playlist logic. I use a program called "Media Center Master" to manage my XBMC .nfo metadata as a point of reference.

Part Two:
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As part of a Playlist's properties (as I would want the rules to be different for a playlist of TV Shows vs a playlist of Music, for example), allow customization of how the metadata fields are presented to the DLNA client, for example:

DLNATitle = "{SeasonNumber}x{EpisodeNumber} - {Title}"
DLNACreatedDate = "{DateAired}"

Customization of the fields would of course be optional, with Mezzmo presenting them in its current default manner otherwise.

These features together would GREATLY enhance the type of listing that would be possible on the clients.

Thanks for considering!
-james