but on the other hand if you're a writer, will you be giving your best stuff to someone who goes out and publicly bashes you?
I'll also point out that the best actors make a minor character shine. The Doctor wasn't supposed to be as big a character as he was. And his scenes in the pilot weren't all that promising. However, Picardo took the ball and ran away with it. He showed the writers what a gold mine they had.
And they rose to the challenge.
Something I've noticed while watching voyager, and other shows as well, is people in the background. when the camera is not focused on them who is still in character pressing buttons and still "in" the scene, and who zones out and stands around waiting to spout their next line.