I think it's awesome how you can bring a signal from DAW to the console with the small fader, then send it (via Routing Matrix or Patch) to some Outboard, but end up bringing it back to the VCA Fader on the exact same channel.
I have set up a bank of compressors on my small faders Channel 33-40, and send to them from the small faders of Channels 1-32.
For example, on my drums (which I have spread from Channel 5-16), the small fader is for the amount of parallel compression.
Try to set up a pair of SSL Channel Compressors with Short Attack (Pull the release button), Ratio 12 o'clock, Threshold 3 o'clock, Short Release. Then send different amounts of Drums with the Small Fader to this Parallel Compressor. Does really enhance my drums.