These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
It's Short, so It Sucks : Comfortably beating the main story for Jade Cocoon takes around eight hours. For an RPG, especially in the monster raising genre, this is incredibly short and is the main criticism leveled at the game. Jade Cocoon 2 fixes this by having larger forests with more numerous floors and a longer story in general that clocks in at around 20-30 hours.
Nightmare Fuel: In Jade Cocoon 2 some of the guttural roars the Kalma direct at you before they attack can be this. '...KILL!'
They Changed It, Now It Sucks: A good number of fans of Jade Cocoon were not pleased to hear that the game mechanics for the sequel had been completely reworked into a beast-amulet with monster rotation (they even point this out by calling you a beasthunter instead of a cocoon master) and the Merging mechanic, one of the main draws of the first game, was done away with altogether in favor of more fixed monster forms.