Agree with you - drop chance must be increased to 1/3 or 1/4. 1/6 is VERY low, especially for Jitan. I think its bugged cause K3K, Khalimgrad, ratma sq. is so so, but Jitan requires 30+ times ALWAYS! at every ladder his fucking charm is so rare for me (not only me as we see).
P.S. what about red anya portal? why its closing every time you kill nihla? Is it was the same in the past? don't remember :/