After playing around with the cstick on the WiiU version, I have a few new techniques to share:
Crouch Tossing - Some of you may be aware that if you're holding a Metal Blade (or any other item), you can crouch and tap the cstick forward or back to fire off jabs without throwing the MB. Well, this works with Leaf Shield, too. If you have a LS up, crouch and cstick in order to toss the LS before MB. With LS's improved cool down, these projectiles appear to combo into each other when thrown this way. If you do Crouch Tossed LS -> (Glide Tossed) MB -> ftilt/nair, you can get a nice little burst of projectile damage while covering your approach. Pretty neat.
Leaf Shield C-sticking - This is pretty straightforward but worth mentioning: when LS is up, you can control which direction you toss it with the c-stick while retaining momentum. So for example, you can easily jump backward while tossing the LS forward. Makes it a lot easier to do that kind of thing than on the 3DS.
Also, a quick strategic observation: the game meta seems to be moving towards using empty jumps for mind games, and I find LS is pretty handy as a "empty jump plus." If you're going to fake someone out with an empty jump, you might as well fire up a LS while doing so because it will make your boost grab that much harder to avoid or counter. Also, b-reversing or wave bouncing LS can make for a great mind game due to it's momentum canceling properties and the fact that it creates a bunch of hitboxes around you. It's great fun to LS b-reverse out of the way of someone trying to catch me with a usmash, land behind them as the leaves activate, then grab and pummel.