The next "milestone" for the Mediainfo extension is to enable all (or at least almost all) of the primitive Wikibase data types as allowable user input.

This includes both "top-level" support at the level of the statement widgets as well as qualifier-level support attached to a specific statement Item.

The statement panel UI as it currently stands is centered on an always-available autocomplete lookup field (something that only makes sense when there is a list of available values to display). We're going to need to change some things about how statement panels look/work when they correspond to other data types.