For moral reasons, the worst has to be replacing parts during changing modes.
Lego-forming is NOT Transforming!!
#2 would be the BeastWars syndrome of Beast-Arm-And-Legs-Become-Robot-Arm-And-Legs or BAALBRAAL.
No creativity when designing a Transform.
#3 would be another BeastWars syndrome of Left Over Kibble = Shield or Hand (LOKESOH). Mighta bin cool the 1st time but every 2nd toy? Really questions the designers' ingenuity again.
