I'll be frank, it's time to put Cait in the garbage where she belongs
First off, I've never bought the myth that she doesn't scale well. A 5-6 item ADC not scaling well? Relative to....? All the other ADCs, who she outranges? Get out of here. She's outrageously strong, and more than that, the archetype of poor design decision regarding ADCs:
-Reposition? Check. -Self-peel? Check. -Hard CC? Check. -Soft CC? Check.
ADCs like this are trouble. Not necessarily inherently BECAUSE of these qualities, but because these qualities often don't come at a cost. Cait is the prime example. Cait mains may hand wave and mumble "mah midgame", but let's be real here. It's time to bury this fucking %%%% under a wave of nerfs so hard that no one will ever want to play her again.
Nerf her trap duration. Nerf headshot damage. Nerf ult range. Nerf Q damage to minions so she can't just one shot an entire fucking wave. Keep her auto range, that's fine. Nerf the distance her net shoots her and nerf the slow on it.
since her traps are always available for basically no cost. She extends any CC because her traps are just free.