Potential twitch updates?

A few days ago I remembered I had a twitch skin, and got excited to play him. Since then I've gotten a couple S ranks and some pretty good scores. While I don't think he NEEDS a buff, I sure think he WANTS one. I have a few ideas for little ways to tweak him without making him too powerful.

1. Lower the time per level that it takes to go in stealth while getting hit. Currently 6, lower to maybe 3-4 at max level?
2. Lower fade time in general per level, so it only takes maybe .75 seconds at max level, and that makes the 6 seconds while getting hit more justified.
3. Make his W linger, slowing and adding extra stacks over time, allowing for slightly better kiting/escape.
4. Add a slow to his E. Maybe a flat amount like 10% or like 3% per stack, again for kiting.
5. Raise his base move-speed to like 335, to help with those early game moments when your stealth is down in lane. Note: this is not me saying twitch is a bad champ, I just think he's missing something that would help him become a top tier pick. I personally think any one of these changes could make that happen.