UPDATE 1 posted below.
I used to get regular drops from LOL dungeons, which apparently seems to have been patched. After the Halloween Seasonal updates, I haven't seen shyte for rare souls since day 2 of the promo and I haven't farmed this hard since the summer.
I am convinced that either the devs believe that things are running right and they are not, or every time they give with one hand in an update (eg: evo runes) some misguided A-hole in charge decides to take with the other (eg: rare souls).
Am I just unlucky or has anybody else seen an overall (if not absolute freeze) on the rare souls awarded in higher difficulty dungeons.