I would like some of the features found in Tracktion Waveform to included in Studio One. Studio One is lacking is MIDI and I would love for it to easier to create chords and also edit MIDI right on the track in sequencer when stretched vertically for both drums and instruments. I also would rather see pianoroll fold to show the scale and key and notes that are in use rather than only allowing notes locked to key and all of the notes seen - some of us have a hard time seeing and already overwhelmed by what is on the screen sometimes depending on the project.
I know most of the features are available in the current iteration. Here is a video as an example: