I would like to see less duplicates. Getting too many primary and special weapons from pinnacle rewards, and when I do get armor it's the same thing over and over.
4 robes from a single Garden of Salvation raid is ridiculous. So is getting boots to drop 2 weeks in a row after completing the dungeon. Getting 3 cloaks from back to back EP encounters sucks too, especially when your very next drop on a different day was another cloak.
My solution is a structured drop system like the original Y1 Escalation Protocol had:
1st drop was class item
2nd drop was boots
3rd drop was gauntlets
4th drop was chest
5th drop was helmet