Think the only thing I'd focus on upgrading would be wrists, skill speed ring and maybe boots with less acc, and a ton of crit. Other than that, our i210 pieces are pretty much ideal if you're looking to stack crit and hit the skills speed "sweet spot". I'd just focus on reducing accuracy to 647 with food and 590ish SS with more crit/det.

Don't think I've seen a diadem piece that exceeds the overall amount of of secondary stats per piece, and far too many pieces that don't even come close to the total number of secondary stats the 210 gear has.