100% certain it does not work like that. Your magic find works for you. The merg magic find works for him/her AND yours. Does not work with chests. Lol it would be kind of fun if they could though. It would be even cooler if they could pick up gold. Like the ferrets in d3, that was helpful, though a bit time wasting, you have to like stand still for 1 second for them to do it .... the increase radius pickup was better. In d2, it's like better to just pick big drops or items you know is worth 20 000 gold plus............ But in d3, the very cool aspect was using the amulet thing that converts gold into exp ... ! i used that once to exp a new char very fast from 1 to very high level... it was so cool. But i am kind of glad d2 has just stayed like it is.
One thing i would like to see changed in d2, was rewards for clearing entire areas. Clearing an area, then an entire act, then an entire difficulty, i.e. all 5 acts. And if you clear each area, the rewards get progressively better. Say, 10% exp bonus first area, 20% next, then next act, 150%.. something like that. The more time you spend, the better the exp bonus... and for killing baal after every monster, like 5 levels bonus......... that would be so cool. A reward for being thorough. But no. Let's not implement intelligent changes..... let's go "terror zones" bleeeh... so dumb. So glad i stick to original d2.