If you are good and aggressive with him at level 4 he's fun for your teammates.
http://dotabuff.com/matches/363017541
http://dotabuff.com/matches/363112810
http://dotabuff.com/matches/363137202
A net and Geostrike on the enemy mid or safe lane does wonders. You can also set up the trick sixghost mentioned where you don't take your level 4 skill point until you land a net, then take it, poof, net again, poof, then stacking Geostrike slows with OoV.
The Tranqs nerf makes straight up jungle farming not as viable. Sure, you can do stacking and poofing of camps in passing, but he really shines with Tranqs and ganking other lanes, while you keep the main one farming your original lane. It takes lots of practice to think in two places at once, but you can eventually get it down and Michael those little guys on opposite ends of the map.
After I get back in town I've been thinking of making a video of how I do micro in my head. I basically divide the micro-intensive heroes into 3 tiers:
Tier III: Easy: Visage: flying units give you more time to focus on your hero as well as a "move them to the trees or stone form" panic button
Tier II: medium: Lone Druid: Important unit that is basically half, if not all of your hero. Only one spell to manage which is easy to do. Items too depending on what you get.
Tier III: hard: Meepo, Chen: The units absolutely make or break the hero. In Chen's case he contributes only half as much with no creeps. In Meepo's case it's obvious: None of them can die or you are done.