Disclaimer: Yeah i dislike the Revert and prefered LeClunk as she was titeled by the very vocal part of mains that despised her.
So basically i think from the Counterplay PoV the CD on her passive should scale to create bigger windows of oppertunity to get a kill on LB if she messes up. Especially in the laning phase a one minute Cooldown on an ability that is similar to Zac, Anivia and Aatrox as they give you a chance to cheat death in a broader sense is not enough. For a slippery assassin like LB who has W plus R+W post 6 as means of escape her safety net is way too high. Given the reliabilty of her kit (4/6 abilites are point and click not counting E and R+E) i think giving it a higher CD would be absolutely reasonable to give the enemy player a chance to punish her.
Like 150-60 seconds on levels 1-16 or sth similar.
Tl,Dr: Title of this thread
Have a wonderful day.