Feedback from a little Yi main (7 sec ult)

I am a Yi main who played 80% of my games with Yi. After the nerf, for many times, when I try to 1p1 someone, highlander expires when the opponent has just 1/5 hp left, then I get slowed and he escaped. Now Yi is unable to kill a tank individually (eg. mundo, trundle, Braum, Nasus, Nunu) How ridiculous

In the first 2-3 sec, you are just chasing. Then you have 4-5 sec to attack, which is not enough, especially after patch 6.9, no more devourer and rageblade is not suitable for Yi. His damage is much much lower than before.

You may argue that highlander is extend by 7 sec per takedown. However, this is not really useless. When 1p1, you only have 7 sec, and it extends after you killed the enemy. When in a teamfight, 42 sec ult is really excessive (35 sec to kill the last enemy??).

So, riot pls. You nerfed Yi because of this 2 items. Shouldn't you revert the nerfs after they are removed/reworked ?

10sec +4/takedown is just balance. Yi have the ability to duel individually and also fight as a team.