What about making the duration on Kog's W increase with level?

It's pretty clear the little guy needs some help. One of his bigger issues is that once the team-fight phase rolls around, his main source of damage tends to give up the ghost on him before the battle is over. Then when things are down to an ADC on ADC duel, the only thing that allows him to win such fights is on cooldown.

Right now the only thing Koggy's W grants on level up is more attack range (and a slightly less crippling cooldown). Those are important, but it still feels kind of bad putting points in the skill. If the duration went up a bit as well (how much, I have no idea) it would help with the uptime issue while also making the skill feel more impactful to put points in.

Thoughts?