Not easy requests, also i am not a registered user, in fact I try not to use anything else beyond Reaper/Live was I want to learn only those two, I almost just try other hosts, so take that in consideration.
So consider them sugestions and not requests.
1- Step Sequencer
2- Session/Matrix View like in Live or Sonar, with individual envelopes (AND/OR)
3- Pattern sequencing like in FL or Orion
4- Staff view/editing, nothing like Finale or Sibelius, more like Mixcraft
5- Audio Time Stretch/Pitch Shift
(6- A virtual MIDI Keyboard would be cool too)
These are mostly things that would help me make music.[/u]