I would like to be able to apply MIDI inserts to only the notes I have selected, similar to how we can apply Quantize/Length processing to selected notes using the menus to the left.
MIDI effects like Arpache, Auto LFO, MIDI velocity Compressor, MIDI Echo and the Transformer would be really extremely useful if you could use them like this.
Realtime visual previews like Direct Offline Processing would also be cool to have, but I could live without them.