How to effectively fit in with the meta

Honestly? You don't. In my experience, you adapt with your team. In champion select, you just select someone who works well with your team comp. Using bot lane as an example would be best.

A squishy damage dealer is generally the ADC, very rarely will they build any defense. In the current meta this isn't really going to change much. Your support choice should depend on your team. If you've got a Fiora top, Xerath mid, and Yi jungle, your best choice for support would likely be a tank. ( ) If your top and/or jungle is building tanky, you may be better off playing an enchanter ( ) This will vary game to game, and isn't expected to counter any meta.

The Tank meta usually follows the Assassin meta which usually follows the ADC meta which also usually follows the assassin meta followed by the tank meta... you get the picture. You don't counter any meta by countering it. You just shift and make it more complicated. I'm not saying every team should consist of the same types of champions, but you don't want 3 assassins an adc and a support. Variety in a team is key to countering a meta.

and those of you who play 4 tank teams ..... just go... [sg-shisa]