Thank you @mamba for your feedback and ideas.
I added the greyed out versions for all current icons.
Also added a level 50 set.
Now I also would be interested to hear player’s feeback for balancing skills number.
For the next version I am currently considering adding a transmuter to storm crysal to change the crystal in a pet that follow you (but limit number to 1 with this transmuter).
version 1.1 released
Have fun