Harry was generally dull and contributed little to the show. Voyager would've been better off if they'd gotten rid of him instead of Kes (yes, I have a one track mind).
I disagree only for the fact that if they kept dropping the ball with Kes during the 3 years she was there, I don't see her staying for the last 4 would have improved her once the focus went to Seven, the Doc & Janeway. If Kes was unused before, she's be non-existant after the soft reboot.
Plus I also think it might raise questions of does Trek still promote diversity if you fire the one Asian actor to keep the White Blonde haired blue eyed girl.