Anti echo feature (midi track option)
For synths and drum machines with a keybed or pads to trigger its own sound(s), you can assign their keybed/pads to the Deluge midi track and record & loop by playing their own keys/pads.
This works nice, but there is 1 problem: the Deluge sends the incoming signal immediately back to the synth/drum machine. This means, every key/pad you press will trigger its note twice (with a very time between them).
For pads/leads etc you won't really notice this, but for short/percussive sounds, you will.
Now some synths have a feature to disconnect its own keybed/pads to the internal sound engine ("Local Off", or similar), so every note will only be triggered once by the Deluge. But not all of them have this feature.
My suggestion: an option to activate "anti echo", in the settings of a midi track. With this setting activated, received notes (midi in) on this midi track are not transmitted to midi out, but they still can be recorded.