I couldn't find this request in the list of recent threads so here goes:

Provide a way to load a large block of IP numbers into the filtered hosts list. Loading them in one at a time can take forever when one has a large list to be added.

The corrolary to the above is for somebody to put together an annotated list of the RIAA IP numbers. I got only about a fifth of the way through the list after hours and hours of whois sessions.