Some changes I've thought of through my Veigar play...

Alright being a long time Veigar main, I know he is OP if you play him right, or press R, but even though I love playing him I know he needs some changes. Part of why I first loved playing Veigar is because he was a bit of a unicorn, you'd see him pretty rarely. Now he is everywhere, and I feel it is cancerous to the league. One way I feel my tiny master of evil could be changed is by making him mechanically challenging instead of having a relatively simple kit... R... I feel this could be done by adjusting his E, its what he relies on most to land his W, which is a large part of his damage output.Maybe they could make it a skillshot or at least harder to hit. His R also needs something along these lines, but I feel it is his signature move so I really would love to find other things to be changed in his kit to make him harder to play, but still powerful enough to be viable. Also his passive... it doesn't fit his kit in my opinion... I was thinking about well if you're gonna make his moves harder to hit by nerfing his stun why not change his passive to reward hitting your spells, so I came up with this. Passive: Upon landing 2 spells in a rapid succession Veigar gains mana/health back (not sure which would be better) that or something along the lines of... Passive: Upon dealing x% of an enemies health in a short duration of time Veigar can teleport a short distance in a direction of his choosing. I feel that these passives would encourage him to combo more, instead of just pressing the R button whenever possible. It would implement more of a need to balance out your mana usage with Q-farming and would make him much harder to play and create new strategies for playing him in and out of lane, and also to keep him alive in teamfights where he is often targeted and singled out due to his damage potential. EDIT: An idea I just had, give his R a longer range (not insanely large) and a cast time... that'd fix it a little bit. Please tell me how you guys feel about these ideas, its my first time making a post like this but it has been on my mind for a loooong time simply because I hate people calling my main a no skill garbage champion, when he is in fact hard to play to his maximum potential. Sure anybody can run into the middle of a team and press R on the opponents carry, and that is what I want fixed. Please tell me what you think!