Can we look at Corki's Package Slow

To be absolutely holistic, the package does knock you off of it so you have to choose to step on it, and it's basically AD rumble equalizer with a much higher CD then.

There are specific situations where 'Cannot be displaced effects' can render you in the middle of the package trail, and stuck there getting wrecked and unable to move out. The slow on the trail is unhealthy at beast. You can 'explain what it is' all you like, that doesn't justify why he has it in the first place or why it has to be so powerful. The way you described it, Corki has a Second Ult, just a higher CDR, and that makes it okay? Jaysus you're a bright one...