Allow the list of items to be filtered by category and/or other fields. At
present I'm using this module to store a large number of products. As there are
various product categories, it's difficult to manage products within one
particular category, especially since there is the ability to manually reorder
the items in the list.

Additionally, while the search box allows some level of filtering, it would be
great to have a filter such as this:

'Show only those items where [field name] [includes|does not include] [your
wildcard search here]'

Or something to that effect. More filters could be added on the fly, but I'm not
sure that's feasible or necessary for most people.

As usual, just a suggestion and if others deem this request surplus to their
needs then that's fine :)