1) scouts have traditionally been, in this game, the anti-rogue..it even used to say something about it on the main website, under the class descriptions, about killing rogues...why else even have a skill like detection then? especially when paired with range, while hide is paired with melee(technically)...
2) detection as a general skill would really unbalance all the x/s classes...kinda like making hide a general skill...you roll a rogue for hide/melee, u roll a scout for range/detection...
3) yes, scouts have essentially been useless in SW since ch4 nerf, but part of that is also due to the fact that rogues > scouts for ranged pvp (advantage of both hide and damage), and since protection against rogues is really the best part of having a scout in pvp, they useless...
4) no, a rogue is not a ranged dps class, and you all have confirmed that...so why would it bother you so much if throw/combo throw's range is nerfed a bit?...u'd still get same damage on bosses...