The supplements weren't bad individualy, IMO... in fact I quite liked some of them (Triax, Coalition War, Atlantis...), but it seems like each one was trying to outdo the one prior, which led to a quick and massive upping in the power level. The Juicer Uprising is a good example of this... suddenly your "by the book" juicer from the main book was a peice of garbage compared to Titan Juicers, Mega Juicers, Delphi Juicers, Dragon Juicers, Pheaton Juicers, Hyperion Juicers, Juicer Wraiths... all better in every way than a normal juicer it seemed. Triax, IMO, was on the other hand a fairly "reasonable" book. Japan and England weren't bad books either. Atlantis was powerfull, but that fit for what Atlantis was.