Idea to balance Tahm Kench
I think that Tahm Kench W on allies should pause the CC's that are currently active on them. Right now, Tahm Kench is a huge issue because ADC's can tank game-changing CC's (thresh hook, morg binding) with no worry of getting killed, because tahm kench has a free "cleanse" on a relatively low CD.
So to balance him in competitive play, instead of cleansing the CC's, TK W should instead pause their timers so that his W functions as a "reposition" tool instead of a pure CC cleanse to squishies. So if your ADC gets hit with a 3sec Morg binding and gets gobbled after 1s, once the ADC gets spit out they'd have 2s of root remaining before they can move again.