I'm wondering, is there an easy way for someone blind like me to insert events like channel aftertouch into a track? Is there a command similar to "Insert Controllers", that can let one insert Channel Aftertouch, Key Aftertouch, Expression text, Hairpins, and Lyrics?

The Event View is the only method I know, other than actually recording events in the normal fashion.
 
There have been times when I've wanted to add controller data to a recorded MIDI track, such as mod or pitch wheel events. The easiest way to do that was to re-record the track, but just work the controllers without playing any notes.
 
Of course, that method will only work if you have a controller that supports after-touch, or has an expression pedal. I know that some people use breath controllers for that stuff. 

I was thinking of the Event Viewer as well, but didn't know if that would work with the screen readers.
 
Bob Bone