Integral parts with some weight of the robotmode like arms depending on paperthin hinges. Universe Cyclonus, MMC Cynicus and Spartan, i'm looking at you!
Parts that don't lock is also a good one. Beasthunters Grimwing could have been a great toy if his arms had locked onto the main body. Or just plain nonsensical design that has a similar result lile Generations Blitzwing: spending effort on gimickery like an animated head may make fanboys happy but it's no replacement for designing a good toy.
Rubber and diecast. Transformation process asking for an absurd amount of force. Transformation process relying on (even slightly) bending/forcing parts. Tiny unreachable parts needed for transformation. Anything fragile. Partsforming.
The ones that bother me the most? hmmm - hindered/no waist articulation - hindered/ no elbow articulation - Beast Wars - hindered/ no wrist articulation - molded poses. ex: Classics Leader Class Jetfire feet - Fragile articulation parts ie. 3P products - IDW look Hastak's ballsier days. oh wait.
I don't like horrible block hands with 5mm peg holes in them. And I hate swords and guns which are made to plug into them. Swords and axes look so stupid when they just plug on and have no hilt/handle running through the fist that's holding them. Recently it has gotten better though.
Figures that can't stand well and figures with ugly/bad/inaccurate head sculpts Same here, I actually prefer it when the weapons integrate as a part of the alt mode or at the very least actually stores somewhere under/in the alt mode as opposed to just being pegged on top or on the sides.
Hands that just hang out. Think of basically ever CWs figure, at least the ones I own. Guys hands in combined mode are just sitting there, they don't tuck and go away, makes the toy seem extremely cheap imo.
Figures that only look good when viewed straight-on. Those ones where all the alt mode kibble gets lazily stacked onto the back instead of integrating it properly. Also applies to jets you can only view from above because there's a big pile of robot underneath.
Gimmicks for the sake of having a gimmick. Plus the sculpt, paintwork and engineering is lessened due to the gimmick. Case in point First Edition Prime figures compared to RiD figures.
Fake parts, if you can't make for instance the car hood the chest then either change the design or the animation model so the hood isn't the chest. I really can stand that, its not even lazy design, its stupid design as the animation/comic model is a hell of a lot easier to change if you really can't make something transform like that.
I usually hate : - Short thigh legs, ergo ; high placed knees. The tradition of giant robot "boots" often causes this sort of articulation disproportion. - Anime super robot proportions ; Giant tall from the waist down, ultra slender and tiny from the waist up, lazily masquaraded with giant shoulder pads. - Super busy panel line details, and too many ridges and bevels, which detract from chracter identity. IDW designs and 3P designs tend to have this. Not always the case, but here and there. Less is often more folks. - Jet altmodes without licensing which add ridiculous canards, wingshape deviations etc. CW aerialbots' jets didn't commit this crime even though they aren't licensed jets.
Fake parts such as a proper cockpit and a fake one (Generations Jetfire) and a fake double Grill (MP 10)
It's not a fake cockpit. It's kind of like the Electrical Optical Targeting System on real life jets such as the F-35 : http://i.imgur.com/jhOTPtW.jpg Especially in Jetfire's case ; the mechanical detail in there is clearly not sculpted to look like a pilot's seat/instrumentarium. So, it's an EOTS sensor. You can google it.
