Rengar's Bonetooth Necklace - Increase the timer for stacks

Bonetooth necklace tooltip follows as;

"**BONETOOTH NECKLACE: **Rengar gains a trophy whenever a champion he damaged within 1.5 seconds dies. Rengar can only gain one trophy per enemy champion, up to 5, with an additional trophy made available through the event The Hunt is On!"

I think it would be a nice QoL change to increase the time span where rengar has to do damage to a champion, my suggestion would be to increase the duration to 3 seconds up from 1.5.

I understand that rengar is a champion many people dislike facing and effectively buffing him isn't going to improve his status, but I believe a small change like this isn't going to break him in any way.

If anything I believe a small change like this would encourage rengar into setting up kills for your adc or midlaner through snares and bola roots without feeling cheated out on another stack you put effort into getting.

Just an idea I've had for a long time as I've played rengar a lot lately.