Situation:
I created an RPG character armature, added the character 100 times in game, GL draw call is about ~5-8 (together with other sprites on screen).
Then I created another armature with single slot that contains all the picture of the RPG character hair types and colour 2048x2048.
When I replace slot display of my first armature with the seconds armature slot then GL draw calls reaches 100+.
It should be a possibility to use multiple texture atlases for a single armature display.