[Hard Rejected] animated gradient icons — Any advice to Improve?

Hello! Recently I sent a new work which I put a lot of effort into, but it has been rejected. I think my item is good, but maybe I can do something to improve it?

And here was my video-preview:

Your project has very little… animation. As far as I can tell all of them just bounce up and down slickly with a bright white sweep and a small twinkle when it’s revealed. Animate them all in a unique reveal instead of this would for sure help.