A reference topic for collectors to be careful with future purchases, or current toys in their collections.
GPS - Gold Plastic Syndrome, is when (usually gold) colouring isn't mixed well enough into the plastic before injecting into the mould-tree, creating weaker bonds along the colour lines/waves in the plastic.
BP - Brittle Plastic, can either be caused by using a harder, less flexible plastic, or an incompatible colouring that makes the plastic more brittle.
Fragile parts - any part that isn't able to take the strain of normal transformation, or breakage/stress marks from moving/inserting of parts.
(try to post breakages/flaws that are likely to occur to others as a general flaw in that particular toy, not just because it broke while playing with it)