2 spooky 2 Weird

Yo, I'm working on a setting and I'm going to use Apocalypse World for the system.  It's just that I want this to be a gritty (well, grittier) setting and I really don't feel that Weird, Brainers and The Psychic Maelstrom would suit my setting.  What would be a good way of getting rid of these?  Or are they load-bearing rules?

Most hacks change their name and form, though can certainly remove it if you like.

The load-bearing rules of AW, to me, are 2d6+(-1 to +3) = result, compared against -6 (cost), 7-9 (success with cost), and 10+ (cost with results).