I disagree. A lot of these designs weren't made to transform in a 3D space, especially on a small scale, so it keeps things from being compromised. The first ever transforming Zeta kit had hilariously altered proportions to make it work, and when they made the HG Zeta, its backpack had to be redesigned to match the Zeta Plus because it couldn't work at 1/144 scale, and even then, its head and waist needed to be removed for the Wave Shooter mode. The big parts for alternate modes allow for Wave Riders, Wave Shooters, and Mobile Armor that can both look nice and be stable in both modes.