Honestly, a huge majority of darius's (and most juggernauts for that matter) problems can be fixed
By just nerfing excessive damage.
Darius doesn't suck because he's forced into extended trades to make the most use of his kit, or because he is too telegraphed. He sucks because he can literally be deleted in like 2-3 seconds mid-late game. Back in his heyday in season 5, his maximum damage potential was LOWER than it is now, and yet he was considered near if not kind of broken.
If you look at the fights in season 5 (right before the cancerous ADC update of season 6) post juggernaut rework, one of the reasons why darius did pretty well was because he wasn't guaranteed to be fucking one shotted by the enemy adc/mage.
Being CC'd for a couple seconds isn't darius's problem, in fact, that was probably intended to be one of his counters (the CC allowing the enemy to swap out so that he gets denied noxian might). The problem is that in this day and age, being CCd for a couple seconds means you'll get fucking deleted, even as a supposedly very tanky juggernaut.
https://www.youtube.com/watch?v=-p_Dt2SMMNk
used to give 10 less AD than it does today.
used to give 10 less AD than it does today.
passive damage used to be 30-100, today it is 60-160.
and 