Maps Giving Xp

Maps should give some xp for while filling it in the map, then completing the map should give a decent amount. The amount of xp goes up depending on the size of the map, for example: a map that has not been expanded gives none while completing it and like 5 xp for filling it in, whereas a full sized map may give 10-20 xp while filling it in and then 100 xp for finishing it.

I personally love filling in the map and exploring the world but there should be some incentive to do so. A small xp bonus would be perfect and a relatively small change.