Don't mind/feed zgnade he's just trolling as per usual
I don't currently play, I quit shortly after 2.2 came out. I quadboxed DH's when M6 Sentries autocast, then once they nerfed that I switched to quadboxing ww barbs, which is awesome btw, fucking nados everywhere, and easier to keep chars grouped as ww goes thru enemies.
For 1,2,3,4 keys obviously don't set up every character the same, you only need warcry on one char, you only need sprint on one char (but I did two because mana issues).
I didn't really equalize the characters, did more of a waterfall system. Obviously when you're first starting out/gearing you need to get 1 char geared up with the set bonuses asap, then the second and third etc.
Once they've all got the right "pieces" then whenever I find a piece my "top" guy gets first pick, my 2nd top guy gets second pick, etc. Works well.