[2020] Just let Kayn choose whichever form he wants at level 6/7, seriously.

Boosting his orbs or damage won't do anything when the champion is as unreliable as he is. I'm a jungle main, and I absolutely love Kayn as a concept and playstyle but something needs to be done about his minigame before he can even be considered a pro play viable champion. There are so many factors at play that determine what form you would want to take, and the fact that you can't guarentee a form at a certain time is ridiculous. For example, say you're playing versus Renekton, Ivern, Kassadin, Ezreal and Morgana. You'd obviously want shadow assassin to deal with Ezreal and Ivern right? Well, lets say your top laner was Riven, and she needed ganks to ensure she didn't get the croc c*ck. Well, your transformation to Shadow Assassin is going to be delayed until 15:00~, or you bite the Rhaast bullet and be useless while Ivern peels you.

This would literally solve almost every issue with the champion. He'd come online sooner in 90% of games, and he would be a more reliable pick, maybe even a reliable first pick in pro games because you could adapt to what they pick into you RELIABLY.