Can't play the difficulty I want to play because RNG?

I’ve put almost 200 hours into the game, and while it’s got some problems that need fixing, it’s got a problem that I am honestly getting completely fed up with and is forcing me to not play the game.

Why can’t I play on Heresy difficulty, Fatshark? Malice is too easy for me, and I’m still getting screwed by shop RNG so my gear still all sucks and my friends all quit playing this game, so playing damnation is out.

Just let me pick my own blasted difficulty.