You are right. I also think we need more Pads instead of only new styles. Pads allow us to make important variations to the current styles. I was surprised to see that my new Pa3X had the exact same pads than my previous Pa500 not even a single new one.

However you can easily learn to create thousands of new pads by copying individual style tracks into pads tracks. I made some following these instructions:

http://korgpa2xpro.yolasite.com/pad-creation.php

Good luck