Were you not expecting people to go +20 adaptive force as the META? (OP)

Isn't it roughly the same amount as the runes gave you for any combination of sorcery / domination / inspiration? What needs to be hotfixed then?

Well I know I'll be going 9% attack speed and 10 armor most games as a Taric main. The majority of junglers will want attack speed for clearing. Quite a few mages and tanks will like the cdr so they don't have to force a build to get 40% cdr. I think the variety will be a lot greater than you think it will be. Not everyone plays a burst mage or assassin.

Technically if you go Transcendence the 1-10% CDR is far better (20 AP)

I'd say it definitely depends on your matchup. If you're in an unfavorable lane, going a bit of extra defense from the start would likely help you more in the early game than going pure damage.

On most of my champions I am not taking 20 adaptive force. Melee laners I will take MR+Armor, most junglers and ADCs need some AS. And there's no reason to take it on tanks.

you realize 20 adaptive force = 12 ad, right? really doesn't seem like a big deal.