In the previous iterations of forge there hasn't been a lighting system and also have you seen halo 4's forge? A creative forger can make a map look unique and make it stand out from the rest. The maps we have currently don't strike me has memorable maps in the future [with the exception of adrift] reach also had very forgettable maps. Where as every halo 3 map [except isolation] was a classic that I believe all have the potential to be fun to play in halo 4 match making