QoL changes for Shadow Assassin Kayn

So I have about 12 games of Kayn under my belt now with about 8 of those being in Shadow Assassin form and I can say fairly confidently that SA is definitely the weaker of the two. While this might be just because assassins in general don't have a lot of fun in a shield meta, SA needs some buffs because he simply isnt on the same level of other assassins like unless he gets CRAZY fed. The only game in which i felt like I was on the same level as my Kassadin, I was 14/1.

Some changes i'd like to see -- maybe not all of them but some of them at least:

• Have the charge bar have red and blue in it, and give it a percentage of how full it is, like Elementalist Lux's.
• Have ranged attacks give you more essence because 1) its harder to get to ranged targets 2) if you are going Shadow Assassin you need to get it FAST in order to keep up. If you accidentally get Darkin you're basically fucked because you wont be getting SA until 12 - 15 minutes.
• Give him additional AD scalling when he chooses SA -- right now you;re literally doing the same damage as Darkin with full AD...
• Make his SA ult apply grevious wounds during the duration, i'm tired of having a support pop a heal on my target right as I'm about to kill them with ult
• Make his Q leave behind a shadow in SA form which eh can then return to for a second or so afterwards, like Zed W.

Or

*Give his ult some execute damage

As well the pre-transformation Kayn ult feels like absolute garbage. Despite the description saying it does "massive damage", it barely does as much as your W. Sure its invulnerability but your enemies get to control where you go if you want to use it. If I try to use it on anyone with some sort of mobility suddenly im in the middle of four enemies under a tower.

Sorry if this sounded like a rant, I really do love Kayn! But his SA form definitely needs some changes if anyone is going to want to use it viably.