Totally agree with DA2 assessment, played through it but I still don't really understand the motivations of some of the characters/factions in that game (maybe it's just me that's obtuse). Where I disagree with GS is on the Reapers, firstly they don't carry the antagonist role on their own thus far through the series, we have Saren in ME1 and the Collector General in ME2 with the Reapers as a shadowy presence in the background which will come to the forefront in ME3 (my humble prediciton).