I've been favourably impressed by a lot of the builds the community makes for the packs: the Werewolves pack had really charming, clever community lots, and Cottage Living had very nice residential builds.
Snowy Escape was a lot rougher around the edges, as it was the first collaboration, I believe (I recall Plumbella saying EA completely changed the terrain and landscaping after the houses were built and it kind of did the community creations a bit dirty). But hopefully everyone has learned since then and these lots will be suitable and integrated correctly into the world.
I watched James' stream of the trailer and whilst he was quietly positive about the addition of a lot of stuff for infants and children, he appears to have been deeply scarred by his experiences with the Highchair, and how infamously buggy it is when trying to feed toddlers in it (it's so bad, genuinely a cursed item for so many players).
He just kept pausing to say "...but how many new ways will the highchair bug out now..." in a haunted tone of voice. And appeared to feel much the same about the new infant carrier thing. And I see his point there, I can only imagine the horrors that might happen if a Sim bugs out while the baby is on their back...