Knock Ups and Dashes

It seems like Knock ups are becoming the most important CC in the game. Tenacity doesn't work vs them so if you Chain them you almost certainly will kill even the tankiest targets. Also Champions with out dashes feel extremely weak in comparison to Champions with them. I noticed a trend with most of the champions being released... they all have a Knock up, or a Dash, Sometimes both (minus , but her ult in someways can feel like a / dash but i would say its more of an untargetable than a Dash) dash and knock up Dash and knock up dash and knock up Very good dash that is dependent on wall. Dash and knock up (only if he goes Rhaast for the knock up) Two knock backs not so much a knock up but still displacement, and a dash in both forms. knock up with Daisy, and allows other people to dash. Skill shot knock up but more of a displacement. Over the past year all the champions released or have CC that is not reduced by Tenacity or extreme mobility. Champions like Are still okay picks but its obvious with no mobility or knock ups they are very poor picks in comparison to other champions who have better tools. So at what point if at all can we expect some changed to knock ups? (maybe shorten the duration over all since tenacity doesn't stop them or something along those lines) Or are we just moving into a Trend that if you don't pick a champion with a knock up / mobility you are setting yourself up for failure?