If you host at the right time, and the level is made well enough (such as by using visible events to make it easier to tell where you are) you could easily get over 5 players to like it. I could say the same for many other concepts...

Odin, I believe you're overreacting to what happened in Overlord's thread. There weren't that many responses claiming how great the concept would be in general. In fact, it's not much of a concept in and by itself as it has only as much merit as a mirrored level. I don't think the concept is worth an entire thread either, and similar gimmick levels usually don't get one. And unless I was in Overlord's server several months ago, I've already seen a completely black battle1. I can personally assure you that there won't be an influx of these types of levels in the near future. Still, playing a "Blackout" level could be fun in very small doses, just like with many other gimmick levels.