the series was destroyed when they destroyed the mass relays. frankly, i think it was the only thing that ruined it. if they hadn't destroyed the relays, i think the ending wouldn't be that bad since most of the conflicts were already resolved throughout the game... but they just had to destroy it. who the hell came up with that idea???

@TheKokopelli i think he was talking about the alpha relay (arrival DLC), and yep, the star system where that relay was located was destroyed including a batarian planet. it delayed the whole reaper attack for a couple of months.