Forget Devourer for a moment, can you Imagine what the game would be like without ADC's?

I'm not sure I can, but I'd love to see it - we came close when Relic shield was briefly overpowered, and seeing 4 melee bruisers deck it out bot lane was incredible. I'm a little sad Morde got nerfed out of competitive play, but maybe we will see some changes in the preseason that make other options possible.

People complain about ADC's being weak right now (sans Vayne), but clearly they are still the dominant force in the league. They are the only champion class or itemization that each team has a minimum of one of. Bot lane itself is stagnant and boring, and I'd love to see change.

Kindred is one direction to take towards making more options bot lane, although I'd really like to see changes to make ADC's less of a necessity overall in the first place.

Even when ADC's are a class feel really unfun and boring (Right now, for the most part), so as long as they are a necessity for a functional team they are overpowered; No other class is irreplaceable or essential.

Right now, ADC's serve two irreplaceable purposes - to force enemies to build armor, as HP alone is not enough to tank ADC's but is usually enough against bruisers and AD assassins, and to take defended towers safely. Neither of these are particularly satisfying elements of play for an ADC, but so as long as no one else can do it, this ends up being their primary point of balance.

If these were no longer an essential parts of a functional team regardless of strategy, like if Ohm Wrecker became a real item for sieging towers, or with more effective physical DPS options for assassins and bruisers (I think the Juggernauts are awesome because they fill this niche) ADC's could have real differences in play style and itemization, rather than building and playing for more or less identical tower-taking and tank-busting roles.