Does that mean you approve of seeing ally's available abilities?
Would still be something, would make it easier to anticipate what situations you can or can't go into without needing to stop 5-10 secs to talk, atm you only have the mana bar/ult button to gauge unless you memorize all the champion's cds, take into account their cdr, and memorize lowered cd from lvling an ability too.
This is mostly helpful for micro-ing.
I'm not a fan of memorizing all that for enemies either. And I've literally never seen someone mention when someone's ult is down, who even has time to stop to type that, especially with how often it happens in total, how would it be useful with no one memorizing the cd of an ult. lol