I have always loved the look of pineapple quilts, but never had the desire to try one. I got the ruler, and now have 7 blocks made and several more almost done. I'm using solids brights in the skinny strips and a jelly roll of the same for the corners. I'm using white on the alternating rows. I have quite a few Creative Grids rulers, finding that they make life so much easier when you are up to a challenge. And I think I will use them more than once. They are something I feel is well worth the money.
As far as your blocks, they look great the way they are, do what you want. Mix them up in a quilt and the not so good ones will look as good as the ones you love.