Aatrox change/buff?

So I think this was a change on the PBE a few months back, might be thinking of the Urgot change, but the AoE fear on his ult. I really felt this would be a good change, yet it also crossed my mind that dueling him top lane (1v1) can be quite a struggle against a decent Aatrox, and so I came up with this idea, what if Aatrox's ult had an AoE fear tied to its active, but the fear duration increases for each enemy champion hit? Say, .25sec per champion or something? That way it doesn't have too much of an effect in a 1v1 duel but if he manages to dive in and hit 5 people with his ult he gets rewarded with a 1.25sec fear on the whole team. Numbers may need tweaking, those are just a placeholder.

So what're your guys thoughts on a change like this?

Edit Decided to look up the AoE fear and found this http://boards.na.leagueoflegends.com/en/c/gameplay-balance/m3qPfvGH-aatrox-ultimate-fear-idea-dive-fighter-feel

Apparently it's not an original idea :(