A solution for Juggernauts

In this linked article I talk about tenacity, and how it should be improved. Ornn is about to get released, increasing CC durations all over the place while Juggernauts do not have the ability to get anywhere past tanks due to kiting/cc. That being said, I thought of another thing that might solve their issues of being rendered useless (only is a meta pick). Introducing a new item ''insert Ragnarok name here'', which is basically an Olaf ultimate. This item could be used only by melee champions, give CC immunity for X seconds, while stats could be %MaxHP and/or %resistances. This way only tanks/juggernauts would be able to use it, while assassins would mostly stay out of it as they are not building any of these two stats.

Edit:added some words