These minimum lvl 50 missions give 11305 xp which you don't need. What's the point of these?
its a smidgen of rpg design leaking through. Anything vaguely off the beaten path gets a pointer quest or 2 to try and shove the player to go look at some pretty thing they made. actually pretty common in other rpg developers too. And if you made a quest it has to give xp cause if it didn't the universe would implode or something.
Honestly i think the xp value some how determines legacy xp. so the value needs to exist for the legacy calcualtion to fire correctly. Additionally from the game design side xp is often used as base or check for all sorts of things because xp always exists on everything rpg since the dawn of rpg time