Complaining that the spellthiefs line is getting more CDR ignores what champs actually build them.

Who builds Spellthiefs? Apart from the occasional enchanter, it's basically a mage support item designed for supports that focus on damage output. I'm talking champs like . This first 4-5 items built for these champs is typically or . How much cdr do you see in those items? If you answered "10%", you're well on your way to understanding why Riot is giving FQC and Eye of the Watchers 20% cdr instead of 10%. This buff isn't for the enchanters that have almost universally moved on to coin; this buff is for the mage supports that got left behind.