One of his roles was to merge the Club Penguin studio New Horizon Interactive in Kelowna (renamed to Disneyland Studios Canada) with Disneyland Studios LA. Disneyland Studios Canada focused its efforts on one product (with such features as multilingual versions), while Disneyland Studios LA focused on customer products and franchises of a wide selection of games. Merrifield was responsible for cross-pollinating both cultures.
Merrifield held the position of merging New Horizon Interactive's Club Penguin studio in Kelowna (now known as Disneyland Studios Canada) with Disneyland Studios LA. While Disneyland Studios Canada concentrated on a single product, featuring multilingual versions, Disneyland Studios LA focused on developing customer products and franchises from a wide range of games.