I totally agree, there simply are no mistakes in building in TS4 since all can be altered afterwards, no need to start again, making it a continuous form of creating and so much fun. I have rebuilt almost all lots in all the worlds, and am almost done to finally start playing the game!
Yeah, I have seen the 'story' section in TS3 forums which makes me puzzled as to way it is appealing; but then I perhaps don't understand the pull of fan fiction either. The idea to have premade sims that reoccur in each iteration I also cannot relate to, but some of the characters in themselves are a little fun, I agree. Grim as a concept fascinates me and so I did like that sim, Nervous Subject, and his mother, in TS3, also the way she looked. I suffer CAS in TS4 since I cannot abide the look of the premades, words like * comes to mind - that hair! The plastic look! The silly proportions! Even I can do better! No, no more negativity, lest we be yelled at by some besserwisser! :P
The OP has not returned to their discussion, but I think words like realism and caricature would need to be defined to be understood and used in the way the are intended by the agitator, since I think the look of Olive Specter and the fluidity of the animations in The Sims 3 are very realistic, depending on what is meant; and the game is too much of a sandbox and with a goofy humour to be a caricature, needing more of a streamlined agenda to be understood as such. I think the difference between these two juxtapositioned games, when looking at the video in the original post, is the photographic likeness and the light, and also the jerky motions and less detailed movement. I don't find photos more real than matter, and I do think that the more fluid and random a motion is the more it suggest the illogical way humans move, with all sorts of unnecessary gestures added where they needn't be.