Attack Move changes (was the complicated solution really necessary?)

Since I first heard about (and read) the attack move changes taking effect in patch 5.9 I was wondering if the entire change was really necessary. I say this because the same issues could have been solved by adding 'target champions only' functionality to attack move.

Granted it wouldn't solve all the use cases (such as being chased by two champions and you only want to attack move the one lagging in the chase), but the majority of the problems from (targeting things other than champions when you want to attack a champion) could have just been easily solved with 'target champions only' functionality.

I look forward to reading what others think.