I have a simple mixing section (Volume/Pan) for each of the 8 Tracks. And there is a TrackFx (Filter/Compressor/Delay-send/Reverb-send) and MasterFx (Compressor/Delay/Reverb)
You can route the audio out back into the input(with a cable, no internal routing). But you can also do automation per track. Currently only Volume/Pan, maybe also Fx Parameters in the future.
The hardest part of adding features is always, how do I make them accessible to keep the immediate feeling.
Here's a video from SuperBooth where I describe some of it's features. I added a lot of stuff since then ... and I'm not a sales dude so the interview was quite awkward ;)