I've mixed all "King in Yellow" Investigator Cards, Other World Cards, and Location Cards into the base deck. Left Mythos Cards on the side (plan on shuffling these into the top 40 Mythos cards if I want to play a heavier King in Yellow themed game, since mixing them into the base deck would diminish the threat of the "Act" cards).
Mix all the "Lurker" Investigator Cards, Other World Cards, Location Cards, and Mythos Cards into the base deck. Use the Relationship cards.
Play with either Herald or none at all.
Has anyone else done something like this? If so, what are your thoughts on it? I don't want a diluted game (hence keeping the "King in Yellow" Mythos cards out unless I want that specifically) but I do want more variety in cards. Also curious how it might be for balance.
EDIT: I was also thinking about mixing every "King in Yellow" Mythos card into the base+Lurker Mythos deck but leaving out the Act cards, shuffling those into the top 30 cards when I want to play with that threat. Any thoughts on this?