I've used backtrack for some time. One thing I always wished it had was some sort of spectral analysis or signal processing tool. One that would allow you to record a portion of whatever band you're trying to look at, be able to setup specific scripts to support known FSK's of different products, and perhaps even a wideband receiver that would allow video processing (PAL/NTSC/DVB/ECT ECT...). An overall signal analysis tool, then backtrack would truly be my one stop shop.
I know programs like this exist, but they're incredibly costly. The free ones aren't usually worth using, but that's the way it goes. I know it's a lot to ask, but I thought It couldn't hurt to throw it out there.
Thank you for your time and efforts,