the reason you have an ADC is because of their stupid late game scaling once they even have 2 end level items built they will start to melt everything also because they are ranged and generally have some one who can peel with them they will destroy melee assassins
example talon dashes onto an ezreal silencing him ezreals taric support dazzels talon before he can get the rest of his combo off and ezreal either escapes or kites and kills said talon due to better scaling

PERHAPS after the S3 item overhaul AD casters will find a place but the reason you have an ADC is for stupid mid-end game scaling

riven perhaps she has amazing burst early mid and if u get fed late to

every team always puts all the focus on one champion every single game

clearly they must be weak.

Thing is... The thing. THE THING IS.

AD carries aren't ridiculous because of their burst, it's because of the ridiculousness of their itemization giving them insane scaling. But you're right! You're right!

These three have the two big things that put them over every other AD carry. They have burst (which means they win the trades in lane and can capitalize on ganks better) and they have escape.

Burst isn't the reason these guys are must-haves! They're must-haves because they're AD carries that step on other AD carries.

I'm looking to the itemization tweaks and such to make a start on breaking some of the crust that's accumulated around top and bot lane. Top lane stagnates because armor is too available and lets one ignore the damage from minions, turret, and a good percentage of all top laners and junglers. Armor being too available against everyone else is a symptom of ADC itemization requiring it...

Good luck, Xyph! You're gonna need it.

The problem that has caused this game's meta to come to a standstill are the two plateaus of balance.

There's AD and tank duking it out on their own level...

And AP is looking up at them from the bottom of the barrel.

AD's are hideously overpowered. Every single one is. Even AD Annie would be overpowered, probably.

What keeps people from realising this is that tankiness is equally overpowered. It scales so ludicruously fast that only the staggering inter-item synergy of the AD carry's average build can stop them.

This game isn't a trinity of factors. There's people saying there's five roles, but that's not really true.

There's the tank, and the AD.

Everything revolves around those. Tanks and Assassins work together on one hand. Assassins do their best to take out the AD in order to let the tank deal with everything else.

Support and AP assist the AD carry. Supports do their best to push them through early game while the AP forces the tank to invest some of their money into MR, preventing them from going Randuin's + Frozen Heart and completely waltzing over the AD carry.

If you want to get rid of this excessive AD carry oriented meta, you'd have to do a severe realignment of a lot of numbers.

Survivability would have to be cut down harshly to make tanks less unkillable. Their base damage is too high to allow so much durability. But they currently have to in order to be able to take a stand against the AD carry.

Which is why the AD carry's potential needs to be reduced as well. Probably the best way to do that would be by reducing crit bonuses.

This would make it easier for the AP and Support to provide more meaningful contributions. Focus would shift away from the AD carry and spread out over all the roles, probably stopping the 0 CS meta.

Of course, this is only a matter of flavour. If you want this duel of Tank vs. AD carry to continue, you won't like such changes.