I too would love to see this added. It still seems to be a restriction in v2.

For me this would be great if it could be fixed because I'm often not happy with the results of quantization and so I often have to manually tweak notes I've sloppily played into a MIDI keyboard and my ever-precise stat dept. tells me 50% more editing work is needed to clean up my crap keyboard skills as a result of not being able to resize notes on both sides!