What sort of information are you looking for? The few files I checked on
[[Category:Files from the Biodiversity Heritage Library]] (butterflies)
seem to be described in detail (mention in description + category for
each species), is this what you're aiming at?
Managing the information templates seems a nightmare, perhaps you should
aim at categories. HotCat works well enough per se, but you still need
to know the category guidelines (or better, the precise name of the
category). It would be great if the autocompletion could be fixed so
that 1) you don't need to know in advance whether the category you need
is e.g. "Churches of Finland" vs. "Finnish churches", 2) redirects and
soft-redirects are followed, e.g. from plural to singular and viceversa.
If such a feature existed, maybe even files uploaded with the
UploadWizard may at some point have categories.
Nemo