While I agree with the fact that the whole idea of planets generated with the specific idea of being a "Raid World" isn't quite something that would fit in with the current path that DU is taking(as well as other species types). Perhaps, something close to it is a possibility. For example, let's say that through time into the future, crime/rebellion is still something that we have to deal with. As a result multiple pirate "Guilds" have formed. Wether they're people who don't agree with the current state of government, or just outlaws and thieves. Rebels/criminals being who they are, would most likely have planetary bases, space stations, and or ships. Any one of these could be the "Dungeon Raid" so many want. As for the whole idea of picking separate races for players to choose, why not have them choose between several "Teams" instead. The "Federation"(Law followers), "Rebels/Criminals"(No description necessary), and the "Neutrals". The neutrals would the players who just want to play without having to plan on how to "Defeat The Enemy". They could be anything, Merchants, explorers, builders, manufacturers, etc. They could also be hired guns for either side... So long as the pay good enough.