1600 is the Old
Distortion speed, and scaling speed of projectiles based on level is both weird and makes it so the later the game is, the less counterplay she actually has, which is counterintuitive since her weakness is supposed to be she doesn't scale well. I don't think too many people would mind 1500 missile speed on her Cocoon though.
Also, I'd like to ask @Meddler , was a Current Health component to her previous Neurotoxin tested? I admit, I don't play Elise much but I did like the concept of her Neurotoxin being a 3 second Damage over Time (you know, actually working like a Toxin) instead of as an upfront burst damage like it is now (which is more like an Acid)