Hello,
We are avid Illustrator users where we take customers Pantone or custom swatch and match them on our digital printers. We love the price of your product, but there's one feature missing for us. When we change a color in Illustrator, we can change the last swatch in the direction the colors need to go, then marquee over the blocks and select "Blend Horizontally" or Vertically etc. There are probably more features I will be looking for, but this can potentially be a great replacement.
Thanks!