Those gate holders are neat, but our group wouldn't use them. We like to leave the gates face down until somebody goes in. It makes things a little more suspenseful, wondering if you are about to take a cakewalk through Earth's Dreamlands or face vast, terrifying destruction in R'lyeh.
On a similar note, our group has no interest in mounting the monster tokens on stands. We don't want to know the exact monster stats until combat begins, because they seem more threatening that way. Also, this whole idea of mounting everything on stands smacks of a longing for miniatures.
But miniatures aren't really a good match for this game. Some of the monsters are so huge compared to investigators, yet smaller than a building, so the scale doesn't work for the board. And there is too much information on those monster tokens on one side, with the artwork on the other side, so with a token mounted in a stand, somebody at the table will see nothing but unthematic stats, while somebody else will see nothing but the artwork and the sneak penalty, as intended by the designer. Perfect information is the enemy of theme in a horror boardgame, it pushes the game in the direction of being a complex set of equations to be solved with algebra. Fuck that.