I would like to be able to search/filter files when adding a Torrent.

Thank You!

In the add transfer dialog, based on your settings either shows you a window and allows you to edit category/ save folder/ default file priority... or it does not (uses program set defaults). You want FILTER in the Transfers tab?

qBitTorrent can do this.

More threads on this:

FEATURE REQUEST: Filter/Search For Files in Torrents
https://forum.tixati.com/support/2611/

File search within a torrent
https://forum.tixati.com/support/1721/

Support for finding files...
https://forum.tixati.com/support/131/

Feature request: Add search box to "add torrent" dialog
https://forum.tixati.com/support/137/

Feature Request: Search in Filenames in Torrent
https://forum.tixati.com/support/2390/