You design the toy first, then let the animators build a cartoon model based off the toy. Overall none of the TF Prime toys are mediocre at best when it comes to engineering and design, which I believe is borne from this whole "show first" approach in an attempt to make to toys more "show accurate." And of course designing Transformers as screen characters is completely counter intuitive to designing them as toys -- you only need to watch the TF Prime Season 1 DVD special features to hear the Hasbro people talk about this (although obviously in a far more diplomatically tactful way

). Transformers Animated suffered from similar problems (though admittedly Leader Megatron turned out to be a really nice toy; but that was more in spite of the design process rather than because of it); and worse still we had several Transformers who made prominent appearances in the show that were never made as toys (Wasp, Omega Supreme (and the inevitable Lugnut Supreme retool

), Constructicons et al.).
TF Prime hasn't been quite so bad -- they're wrapping the show up well ahead of the release of the next TF film which I think is a good move as it will prevent the two lines from potentially "cross competing" with each other's products (which is why the TFA Constructicons were never made; given a choice between them and the ROTF Constructicons the latter won out

). But there are still several characters that don't have toys -- there's no Deluxe Class Smokescreen in his Binaltech Colours (only a Legion Class that is only available through buying a vehicle); and as far as Hasbro's markets are concerned, there was never any Voyager Class Breakdown, Jet Vehicon or Jet Vehicon General (which if Hasbro did decide to release, I'd rather see being called something else like, "Jet Vehicon Armada" or "Jet Vehicon Elite"; they were never portrayed as ranking officers in the show, merely a special flying corps under Starscream's command). The Voyager Breakdown mould exists - I've no idea why Hasbro didn't release it
(I still don't know why Hasbro never bothered to release DOTM DLX Leadfoot, Soundwave or Quejack.
Don't even start me about poor Dino/Mirage... gah).
For the time being Hasbro seems adamant on continuing on this path of prioritising screen designs over toy designs with any franchise that has a screen presence. For the live action films I can understand it... for cartoons not so much. *sigh* Generations seems increasingly influenced by comic book designs, which actually seems to work. For some reason Transformers designed by comic book artists appear easier to "translate" into toys than those designed by screen animators. Maybe because comic designs don't have to be as "rigorous" as screen designs since you only ever see them in static poses, whereas constructing screen designs is more exacting (especially when rendered in 3D/CGI) since you have to see them in motion. <shrugs>
