Since Ezreal is hardly an "ADC" anymore (I consider him a full-on caster, something like Annie but AD), I wanted to give him a shot on Twisted Treeline. (I know, it pisses me off when people insta-lock an ADC on Treeline, too... that's why I don't call him an ADC. 
)
All in all, here's my observations. I'd highly recommend trying it!
• Make sure your other teammates are aware of the fact that you have NO cc at all for the first 15 minutes.
• Make sure you are not double-stacking squishies.
• Start Tear so you can have Manamune ASAP for even more burst.
PROS:
• The ganks were HILARIOUS. The E over a wall + Q + W + sheen + autoattack combo ended up doing about 750-900 damage once I had Manamune.
• Since you can't ward, ganking is stupidly easy.
• Counter jungling was very easy because you can be safer than most junglers can generally be. With your AA range you can stand far enough away to see them coming at you, and if you do get caught then you can just Arcane Shift over the wall to avoid their rape-train.
• The tiny map makes your ultimate so easy to land at all times.
• It's very nice to have a ranged champion with some physical damage for turret seiging. Most games in TT end up having no towers taken until an ace, but with Ezreal mid-game I could push and score 3-4 hits and repeat.
• All of the walls are Arcane Shift-able.
• In general, the ability to clear an entire wave at will is very nice. If you time it right you can get 2 waves. This guarantees your team won't need to be defending the bottom lane for at least 30 seconds, which can mean a quick Vilemaw or altar steal.
• You can say KAMEHAMEHA in your head every time you ult.
• Treeline seems full of gap-closing bruisers like J4 and Jax. It's so satisfying having them "jump" on you, Arcane Shifting to safety, and then watching your two bruisers pummel him to death.
)All in all, here's my observations. I'd highly recommend trying it!
• Make sure your other teammates are aware of the fact that you have NO cc at all for the first 15 minutes.
• Make sure you are not double-stacking squishies.
• Start Tear so you can have Manamune ASAP for even more burst.
PROS:
• The ganks were HILARIOUS. The E over a wall + Q + W + sheen + autoattack combo ended up doing about 750-900 damage once I had Manamune.
• Since you can't ward, ganking is stupidly easy.
• Counter jungling was very easy because you can be safer than most junglers can generally be. With your AA range you can stand far enough away to see them coming at you, and if you do get caught then you can just Arcane Shift over the wall to avoid their rape-train.
• The tiny map makes your ultimate so easy to land at all times.
• It's very nice to have a ranged champion with some physical damage for turret seiging. Most games in TT end up having no towers taken until an ace, but with Ezreal mid-game I could push and score 3-4 hits and repeat.
• All of the walls are Arcane Shift-able.
• In general, the ability to clear an entire wave at will is very nice. If you time it right you can get 2 waves. This guarantees your team won't need to be defending the bottom lane for at least 30 seconds, which can mean a quick Vilemaw or altar steal.
• You can say KAMEHAMEHA in your head every time you ult.
• Treeline seems full of gap-closing bruisers like J4 and Jax. It's so satisfying having them "jump" on you, Arcane Shifting to safety, and then watching your two bruisers pummel him to death.
