ADC Annie: What I've tried and what I need help with.
Because of the range revert, Annie has the most base range of the whole game, also being improved by RFC.
So far, the only thing keeping Annie from being an amazing ADC is that awful attack speed.
My runes so far have been:
Lethal Tempo Triumph Legend: Alacrity Coup De Grace
and
Approch Velocity Magical Footwear
And my two rushed items are:
-> 
Now, I personally want to dodge relying on attack speed for the damage; and mainly build anything that's AD afterwards.
These runes allow for a maximum 110% + 18% + 18% = 146% Attack Speed at later levels.
Magical Footwear is for the mobility.
In lane, she can poke easily; but not hard. As soon as she gets Stormrazor, prepare for the enemy Mid or Jungle to gank you. You can kite enemies easily and make them a little scared to farm, making them need to play safer; thus giving you more time to farm.
Slamming someone with your bear is still needed though, because Tibbers while he's active and damaging an enemy champion; keeps activating your Lethal Tempo for that attack speed boost.
To explain Annie's ADC playstyle more, you're truly a sniper. You don't want to lock them down and throw everything on them like Caitlyn does. You want to usually have more movement speed than the opposing ADC, so you can auto-attack them as they run.
With RFC, you have a 775 attack range; which is a little more than half the screen.
So if they fight back, E and W. If they flash / try to run away, resort to Q.
You don't want to use your Q to try to last hit a champion like normal Annie would though. Your Q range doesn't even match what your auto range is like.
Also, there is benefits to having a slow auto projectile. You can always gain the last hit if they flash away from your jungler.
Now here's where my problem begins. Is there anyway I can get this same gameplay with another, more powerful rune? Like Hail of Blades or Dark Harvest?