There are millions of players, the queue times wouldn't be that long. But yeah I guess queue for lanes then to not interfere with meta.

implying I want to work for riot

Shut up Waffle, stop being so delicious.

I'm so hungry...

Me too, but I can't eat. Damn you, diet.

Also, how would this work out for Dominion/Twisted Treeline?

It wouldn't. They can make it for just twisted treeline ranked or something.

there are millions of players in WoW as well, and yes it takes that long.

As someone who has the capacity to troll every now and then, this feature would make that just waaayyyyyy too ****ing easy.

Also, this game isn't about linearity in it's champions. You're encouraged to try reasonably unorthodox styles of play, I.E. Tank Anivia

What if I want a serious team that goes all AD carry or all bruisers with black cleavers? IF we had that stupid feature, I wouldn't be able to mass black cleavers efficiently... I'd have to stack BC on soraka... wtf

a) Riot clearly stated that they'll NEVER force metagame on anyone or ban for not following it. And this idea promotes metagame this way.
b) No one would queue for support and EVERYONE would try for mid/adc/top (and maybe jungle as well, although I dislike new jungle even more then in s2). Which would make queues so LOOOOOOOOOOOOOOOOOOONG.
c) And what you do when you want to go for example 1vs2 at mid when you duo Q ? (which is viable, watch some pro games). How do you queue for this ? Even longer queue time because both of you want to go mid ?

Honestly I would like to see it, but IMO it's impossible to apply or really hard to do.