East Heretic Wong Yerk See, West Poison Au Yeung Fung, South Emperor Deun Chi Hing, North Beggar Hung 7 Gung, and Central Divinity Wong Chung Yeung all received their directional titles before the story of LOCH proper began. Hence, throughout LOCH and ROCH, we frequently hear those titles attached to those men's names. At the end of ROCH, there was a massive reorganizing of the names and titles. Other than East Heretic Wong Yerk See being unchanged, the new titles were West Passionate Yeung Gor, South Monk 1 Deng, North Hero Gwok Jing, and Central Mischief Chow Bak Tung.
ROCH ends at that point, and we do not directly hear from these characters again. A few of them are mentioned a century later in HSDS, however.
During HSDS, the names of Gwok Jing and Yeung Gor come up quite often. It doesn't seem, however, that the titles "North Hero" and "West Passionate" were attached to their names the way "North Beggar" and "West Poison" were once attached to Hung 7 Gung and Au Yeung Fung's names. Did the new titles for the new Greats just not stick in the public imagination of wulin the way the old titles did for the old Greats?