I’m all for characters getting specific cc reduction or gear getting a big buff, but probably not both. Stuns lasting half a second and slows lasting .75 seconds with fully stacked gear seems like it would be about balanced for having no attack gear slotted. Stick the minors only on majors like shards and health (to promote an actual tank playstyle) or something.
Gear stacking that on attikus would go a long way to making him very viable without any more skill tweaks probably. He has the highest damage in the game… its just to easy to stop him from applying it.