I like the send-to function that compressor uses through Final Cut. Nice that you can access Episode through the compressor plug-in too. You don't ever have to create an intermediate file. Compress directly from your timeline. VERY ATTRACTIVE.
I'd like more function in doing a TimeCode overlay...being able to read from the timecode track embedded in a QT file, or create fresh time code.
I LOVE the hardware scaling that Matrox offers with CompressHD and their Max products to encode h264. Would love to see an offering that mixes something like that with other codecs...hardware accelerated MPEG2 and WMV encoding? That would be fun! :)