I have done several dozens of the radiant quests from Vex and Delvin and earned a lot of money doing this. Beside the coin, does it make sense to do those quests?
In the beginning I thought that doing them will enable the special quests to retake certain cities, but after I while it felt more like those special quests become available as I level up.
How do those radiant quests really work? Do the influence other plot lines or are they just cheap fillers to get some money?