Just formally jotting down the idea I had of moving the Dark Claw pickup to TDA's area so that you get it earlier than the Soulrender. I might leave the one in Hell in place for those who haven't found it, though, so you won't miss it entirely if you don't go after the blue key.

If you do remove the one in Hell, then be sure to have something else trigger that wall to open up, otherwise nobody is getting to the blue skull door anyway

This thing that Xaser has previously reminded himself to do has now been done, thus it is now a "Thing that Xaser has previously told himself to do and has now been done."