I'd like to see his shield put on his passive. His ulti's dash put on his W.
W now will allow him to dash to enemy's effected by his other abilities. At a much lower range. While his R is active the range is increased to current values.
But that may give him too much mobility. Landing a Q and having it give him a MS buff and a gap closer could be a bit much. The gap closer would also be quite small requiring him to use the MS buff to get in range for the gap closer. Possibly increasing as he ranks it up.
Another thing I think would be cool is have it so he can toggle his R off somehow instead of diving,and only have it use a % of the cooldown.
For example you activate it for two seconds so your allies can escape a gank. Each second costing 20% of the cooldown plus a 20% activation "tax". So he only uses up 60% of the cooldown by doing this. Using R to attack an enemy will use the full cooldown.