It would be far easier for Jedi to have an on/off button on their hilt that actually works. Especially if they use lightsaber throws on enemies.
Imagine having to both guide the lightsaber, keep it on, and focus on your other enemies as well? Should be brutal on any Jedi's mind :p LOL
On topic: I definitely like Monro's idea.
Sounds natural as is, and that's what it should have looked like, judging from Luke's split second reaction.