Why doesn't Kalista ult herself?

If Kalista teleported herself to her soulbound and then launched herself, there would be far fewer complaints about her ult. Kalista could use her ult as either a weapon or an escape without interfering with her teammate's decision making. It's just as safe as using her ult on a squishy support, as Kalista would jump back to her AA range. In fact, it is probably safer, because Kalista can knockup --> AA --> dash backward.