Remove the whole cooldown reducing basic attacks shenanigan. This mechanic is nowhere near healthy when so many items have CDR acquired with them. They should bring back the bruiser passive, which gave flat damage reduction based on bonus AD on an individual passive and active component. Not going to spread any false claims, but damage reduction is the last form of defensive stat in the game that is not available to any champion, and is a saving grace to the current meta revolving around 'one shot or be one shotted'. This revision of SOJ will not be totally broken, if so much true damage exists in the game right now, there should be no issue with counter play.
On a side note, if they ever decide to bring this back in Season 10 or so, then I'd highly suggest they work around how it functions on ranged champions, because that could be a potential balance issue.
If you try to argue with "bruisers won't take damage than!!!!" then please tell me why you enjoy playing versus Riven and Jax with 0 cool downs?
It used to be:
+60 Attack Damage
+200 Health
+10% Cooldown Reduction
**UNIQUE Passive **
Reduces damage from champion attacks and abilities by 20 (+10% bonus AD), capped at 70.
UNIQUE Passive
While within 500-units of at least 3 enemy champions, use a basic attack to trigger active passive (90 second cooldown).
UNIQUE Passive- Dragon Heart
For 6 seconds, blocks 200% more damage, for a total of 60 (+ 30% bonus AD). The duration refreshes on takedowns (kills and assists).
Only thing I'd change here are the scalings, increase them a bit, and maybe add a health ratio (like 1-2% bonus HP).