My two cents on how Shyvana ult currently works and should work
Currently Shyvana ult is weak and bugged in almost every way imaginable. It's like....It's a dash but shes a projectile..? And enemies hit along the way are moved in the direction she ults. Hence the ult pictures being an arrow when you hover over it.
I feel this dragon with wings outstretched should instead be programmed as a moving wall. You've done this before with Windwall and Azir ult, so this is entirely possible, making Shyvana herself transparent so she runs into nothing, and an invisible wall the length of her wingspan would correctly carry the targets with her to the given area, and allow nothing to be missed.
I really don't know Riot's spaghetti code, but I feel like this would fix 90% of the bugs we have with her ult. Thoughts?