About the heretic mission, playing on hard I didn't get either the kali or tungsten just a selection of fighter guns and a topaz (50% laser damage mitigation for motherships). One thing I did get though is there actually *is* a pirate stash near where it gets marked. Had to comb that asteroid field several times but got a gunslinger and several other bits & pieces out of it
So you get the stash loot & convoy loots which wasn't too shabby hehe.
Also on this run through the traders have sold me info that Pandora contains a station which supposedly can fix your faction standings, excepting the pirates. Also that Ergelan USS station has low prices for equipment. Not stash info, but worth knowing anyway.