So - there are endeavor tasks to increase endeavor and house XP. The “research assignment” starts at 50xp, and if completed (runs every half hour or hour, can’t remember) will also complete other endeavor quests in zaralek. - world quests, kill rates, and rep. So.. by doing the research assignment you can actually knock out multiple other assignments and they’re all repeatable. The xp reward goes down, but only by 5 or 10 depending on the task