I thought, a few posts above, you said you served pretty well with a consistent ritual.
This vid, you walk up and hit the ball.
Shouldn't you adopt a consistent ritual before each and every serve?
What's the point of rapid fire serving, when the opponent is just standing there watching your serves?
And yes, your serve is very good even at 4.5 for someone your size, if you can keep from falling 5' to your left.
And do you have more than just the same old top/slice serve?