Add a new high score ranking based on accessing nodes. Maybe tie in some non-combat related bonuses it like being a requirement to start some quests, getting better NPC results if you've activated nodes related to them in some way, maybe provide a title to people who maintain high scores for X hours of game play, and a title to the people who have achieved the highest number of nodes(max not current) in a period of time.
You travel to a totem/holy spot/site/node/whatever. Activate it Then are given hints to where the next closest one is.
Every time you die your "nodes" activated score goes back to 0.