It's good see that there are people who think that midi and music belongs together. I work with orchestrations, and it's only 50% of the song that you enter the midi notes. The other 50% comes from midi CC editing; mod-wheel, foot-pedal, expression, pitch-wheel. Well, literally the cc editing is taking the most effort, to make it sound as supposed.
And currently it is a bit painful to do with reapers limited support.
It is so close that Reaper is a perfect tool for musician. In other words I'd like to say that midi cc is not some esoteric feature that nobody uses/needs.
Sorry for nagging
cheers