Why Shyvana's ult needs to stay similar to her base kit.
So she doesn't end up with the same balance and design issues as the following:
and somewhat
due to her ranged/melee swap.
Don't get me wrong, Shyvana needs some work. But the suggestions for her ult by many people are atrocious. The last thing we need is ANOTHER awkward to balance morphing character who is almost never balanced in a fair spot.