Champion interactions with items or other champions.

In the game I've seen a lot of things I'm confused by such as Kha going to ult Lucian and Lucian dashes but still gets hit even though he isn't in range.

-Sejuani ult stunning people when they aren't in the radius of it.

-Kindred ult not keep team champions alive even when they're in the radius of it.

-Kassadin in his passive says that he takes mana from the enemy and converts it into a shield.... How can he get a shield when he's fighting a Vayne, Graves, and anyone else who doesn't use mana?

-Nid's range is shortened when she ults. So how come when she receives a rapid fire canon does she have a range double of her normal range pre ult? If I put RFC on GP he only gets an extra block.

-When Garen starts spinning and he's knocked up or stunned why doesnt he stop? Katarina stops ulting when she's interupted. Idk if this is a bug but everytime i get an Ahri she's kind of dumb, she always ults towards the furthest target and it never reaches.

-Tris when applying multiple ults it doesnt stack which is great, but it gets rid of the previous ult applied to them resetting the amount of times that Tris needs to auto that enemy target. Maybe have it to where Trist can't apply her ult to the same person, so she can utilize her gunslinger passive more effectively. Another fix would be to just have the previous ult deal dmg but less than it would at max like in the actual game.

Im positive there's more but i can't really remember.

Also item RNG is absurd, i've gone the first few pve rounds and have gotten 3 complete items and two components for others, and it won me the game just because everyone esle only recieve three or less item components or none. FeelsBad even when you play against them.