Rengol has rune, king chest, insignia, intact orc, essence beast etc, when it was released back few months ago ppl running more more and more,and more when the King has awaken (even forgot its name xD).
The new 3 expansion maps now has only coin and class jewel (better run tindirin for this one) even never seen ppl loot some legit item (lets just say pinks), i guess there is such a plan to surprise us in the near future when the elite version is on the line,,,worth waiting...