I know this can be done with APRS-IS filters for the internet side, but I'd like some way to block an RF station. Any chance of seeing this?
Not any time soon. I've got some ideas in mind for advanced display filtering, but they're primarily focused on whitelisting stations for events (thing Tag and View/Tags).
If a station is being received on RF, just making it not appear on the map isn't doing anything to fix the RF environment. If the station is truly operating in a community-unfriendly manner, there are procedures in place for attempting to get the source of the situation corrected (always short of pinning coax).
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32