If you want some insight;
Changing a character’s idle stance is extremely time consuming, because every move flows from that stance and back to it. So, in essence, you are signing up to alter a large number of animations, even though on the surface to the consumer it may only seem like one.
Beyond that, Boss Shago also had the unique VS screen stance, but uses Jago’s stance in game, so for this reason and the one above, we chose to keep it that way and focus our energy on more important things about him.