@Riot Elise's buffs for 5.4 is just a band-aid and its gonna fall off quickly.
I don't understand why you won't just buff her properly, instead of buffing parts of her that aren't important (5% to spider lings damage scaling.) This isn't doing her any favors late game because they won't get any action then . If you want this to be more effective bring the spider ling's Multi-target damage reduction back to 10/20/30/40% instead of a measly 25% flat.