Give Yorick some love

I've been playing Yorick since his rework and absolutely love him. I have played him from Bronze III to Silver 1 and I'm continuing to climb. Overall, I think he is fairly balanced in lower brackets but I'm running into problems with him as I move up and my opponents understand his mechanics. My main issue is the lack of responsiveness between his Mistwalkers and Mourning Mist. Yorick needs more "bang for his buck" when he successfully lands Mourning Mist and I'd like to see it become a little less predictable (players generally know its getting cast right after using awakening). My suggestions are geared to increase the aggro radius of the mark on the mistwalkers so that my opponents need to do more than take 3 steps backward to avoid the wrath of the walkers. The aggro radius is horrendously small and feels like its out ranged by several ADC's auto attacks. Furthermore Mourning Mist is a small hit box and slow projectile so it's completely dodgeable to boot. This would allow Yorick to be a little bit more competitive against ranged characters and would feel infinitely less glitchy. I'm a little biased and think Yorick needs a couple of other tweaks aswell, but I"m a little biased. Here are my thoughts:

1. Triple the aggro radius of the Mistwalkers and the Mark from Mourning Mist, so Yorick can do things like chase. Or take some damage from the Mistwalkers and add some damage to his "Q" so he can at least finish an escaping opponent with a 1/4 health.
2. Increase the radius before graves are destroyed so I don't have to sacrifice graves to ward.
3. Let the graves "cycle" by eliminating the oldest one whenever a new one would spawn so I don't get stuck in the awkward position of having to cross minion line to activate awakening. This would give Yorick more flexibility with changes in where the minion waves are and would allow for more strategic gameplay.
4. Increase the survival radius for Mistwalkers so I don't have to sacrifice my Mistwalkers to ward.
5. Have Leap count as an auto attack or increase the run speed of mist walkers (or tie their speed to Yoricks so they get faster with boots) (This is my wish list item).

Bottomline is it just takes so little mobility or range to make Yorick completely helpless in lane. Give him some love for landing a semi difficult skill shot and don't make him feel penalized for doing completely necessary things like warding. Yorick's overalll win rate is also pretty low so it's okay to give him a small buff.