most of the pretenders, great concept, very poor execution. And the duocons, again great concept, very poor execution- no articulation
Actually, most Pretenders are probably better articulated than your average G1 Transformer. But I find that most of the 1988 Pretenders were the crappier ones. They did get better in 1989.
Problems with the 1988 Pretenders included:
+ Really uninspiring transformations/designs. A lot of them just chuck their legs over to transform. I've see human contortionists do better. Gunrunner would have to be the worst of the lot. His accessory _is_ his alt mode! The robot itself transforms into... a folded up robot.
+ WTH?! alt modes. Nobody likes WTH?! alt modes -- that's why Bayverse TF1 and ROTF Megatron sucks... from robot to "Buh???" and back. To be effective robots in disguise, they need to transform into an immediately recognisable alt mode. Waverider was the first Pretender I got -- when I opened that toy I started running around the backyard playing with it like a jet/spaceship. Then I read the tech specs and discovered that it's meant to be a submersible... with wings. Then I got Landmine - ooh, a tank, no wait, an asteroid mining vehicle? Sure, why not. Splashdown's a boat/sub?? I don't know...
They did make a considerably better effort in 1989 though. The '89 Pretenders' transformations were still pretty simple, but much better executed than their forerunners. And most importantly, you can immediately recognise what the hell they're supposed to be! Bludgeon's clearly a tank, Thunderwing's clearly a jet, Stranglehold's clearly a rhinoceros... heck, even each of the Pretender Monsters have fairly definitive looking monster modes (e.g. Firefly's clearly some kind of winged demon/monster - even if we don't know kind of monster it is, what it's supposed to be is clear enough. You're not going to mistake it for a bus or something). And IMHO, Pretender Bumblebee was the best G1 Bumblebee toy made! Even the crappier 1989 Pretenders, like Grimlock, still had a more thought-out transformation design and definitive looking alt mode. You can _see_ that it's meant to be a robotic T-Rex. The best 1988 Pretender was probably Metalhawk -- he's clearly a jet fighter. Of course, he was only released in Japan, and the thing I don't like about Metalhawk is how "cartoony" his Pretender shell looks. Clashes with the style of the other Autobot Pretenders. :/