Oooh, right yeah I see what mean now. Yeah that makes more sense. Probs best go on the offensive then huh, though that might just bring more heat down onto you
The Surface has resources and followers you can recruit to your cause. So does the Underdark beyond the Mad Maze if you can build a stable pathway to it. You can ignore it, but there is power to be gained on the Surface. Its a matter of choice. But your Shard is growing in power as you build your Dungeon and the Light will eventually realize what the Dark Lord did in his final moments.