I find it strange that we're getting stuff like Notation on the way, when basic channel editing is still languishing compared to sequencers that I used in Atari days.
http://forum.cockos.com/project.php?issueid=978
The ones that stick out majorly:
+ no more sequential identical values when drawing in the controller channel editor.
+ allow the line tool to DRAW controller values (see Issue 838, here, for more pics); and whilst drawing a) Erase underlying values, b) Change density of data depending on 0-127 resolution avoiding build up of sequential identical data
I've moved to using ReaMIDIControl, but it's fiddly and not as integrated as the Midi Editor view. Also, I can't record into these envelopes (I think? I could be wrong here...)