Buy it, end it in deeply (explore all finish all quest, it require 400+ hours) first time then wait for new dungeon/landmasses that the modders make or replay again by adding some treasure hunting mod and secondary map markers, this permit to you to going trough the game even more deeply by exploring thing that in the normal game you will never find its better that in the first playtrough keep the vanilla game, no mods no other thing, in the second playtrough you can add whatever thing you want ;)