Problem with Shvyana's Ultimate

I'm a big fan of Shyvana. She was one of the first champions I played, and I have always considered her one of my mains. She is really fun to play! Turning into a dragon feels so epic! However, something about it really bothers me: almost anything in the world can interrupt Shvyana mid-flight! This includes knockups, knockbacks, stuns, snares, which collectively many champions have. It's rare to play a game without at least one of those.

From a player's perspective it makes her ult really anticlimactic. It doesn't seem right that a mighty dragon in flight can be interrupted by basic things. It's frustrating, totally ruins everything in a fight, and doesn't even make sense!!! I get such a similar feeling when I play as Falco against Fox in Super Smash Bros. Melee. Every time Fox falls off the ledge, he has such a better chance of recovering because his recovery, which is otherwise the same as Falco's, goes a longer distance. If I end flying far off the ledge with fox, he just makes it back and I just drop, and all that's in my head is, "FALCO UR A BIRD WHY CAN'T U FLY?!" Furthermore, it looks really gross when it's interrupted. The model behaves unpredictably, the camera stops abruptly if you're holing the spacebar... Bottom line, Shyvana's ultimate is really not fun to use when it can be denied by so many things that don't seem reasonable.

Considering balance, this weakness in Shyvana's ult makes it really difficult for her to compete with other characters with similar roles. Shyvana's ult is primarily an engage. Other engages, such as Vi's ult, Malphite's ult, and Hecarim's ult, have CC immunity. I can't really see how making Shyvana's ult un-interruptible would make her overpowered. It only lasts a second, does mediocre damage, and has fairly weak CC. Most of the benefit of Shyvana's ult comes from the passive resistance buff and the subsequent usage of her modified abilities. Making the initial part un-interruptible would do little more than make her gameplay more intuitive. As it is, Shyvana is totally helpless against crowd control, being a melee champion with no other gap closers. Her ult, being her only gap closer, should really be her trump card to be used against CC at the right time, especially given that enemies can see when it's up. That's what I've imagined her gap closer to be for.