So basically Phreak you can't buff Yi because he can snowball? Honestly what is the chance of a Yi cleaning up a legitimate team that can stay in formation?
If we were to compare Yi to Tryndamere, while in theory Yi can snowball in a teamfight, it's not going to happen in today's game environment. There are so many forms of crowd control and gap closers a Yi player practically has to get LUCKY to find someone far from their team.
Now you might say the same thing for Tryndamere, but Tryndamere has one key mechanic that still makes him pretty close to viable in most Elos. He can prevent death for 5 seconds! That means he's guaranteed at least those 5 seconds to do some damage, and it's even worse with cleanse. If a Yi player had the same task on his hands, even if he waited for crowd control effects to be used up, he can still straight up die. I honestly wouldn't mind seeing the snowball effect removed or reworked in order for his HORRIBLE meditation skill to get a rework as well.
Tryndamere's Undying Rage: 60 second cooldown, Invulnerabilty for 5 seconds, bonus damage based on missing health, can still attack and maneuver around the enemy. (Useful with any build)
Yi's Meditate: 30 second cooldown, Massive armor and magic resist buff, heal over time, can still die AND can't attack or move? (only really useful if you build AP, which a typical build doesn't have)
You tell me which ability needs fixing...