How to make it so bruisers or melee carries can actually play the game again against CC :

Mercs could go back to 35 tenacity, tabi could use a nerf and there could be a small 10~15% tenacity on a mastery or (now rune) slot that doesnt require you to go full 18 in defense.

What made cc stronger was 3 things, 1 they nerfed mercs tenacity, 2 they made tabi so broken that you have to build it most of the time which means you cannot get tenacity from mercs and 3 you cannot get any kind of tenacity from masteries without fully investing on the defense tree.

To add, i feel like knockups in general needs a pass on them, as too many champs have been getting non ult knockups that go over 1s on spammable basic abilities which is completely absurd (hello zac), knockups should either : be very short on basic spells and/or require some setup (like riven 3rd Q) or be moderate duration but gated by ult CDs (like malphite or vi ult), zac Q for example is truly the definition of CC creep and should not happen.

We could also possibly add a new item or make a few changes to existing one, like making QSS give you some % tenacity if you sucessfuly cleanse a disable.