I want to add that collection quests in Borean Tundra are not too bad at all. I've done every quest line there, and where I've skipped almost every collection quest in the 1-70 grind, I haven't skipped a single one from 70-73. There are more mobs & more 'parts' to collect than ever before. Can't recall i had to wait one time for a respawn. Moved to the next zone and it feels the same.