1] Group Project to build hall was very good. Small group with things in common seem to actually communicate with each other while building, which makes the whole endeavour a lot more fun.
2] Getting a proper street sign with your group name on it is cool.
3] One group claiming the only lot on a street and then not really using is a recipe for lameness. i imagine that there will either be a way to have more group halls per street, a restriction of group hall projects to residential quarters only .. or somehow evicting groups who don't use their prominently positioned hall.
4] The group hall "interior" was disappointing, tho it is obviously only a placeholder for the real thing. I think the quality of the interior and its features might make or break the concept. What sort of group specific features will the halls possess?
5] If the group hall really is more like a "group street", would players be able to have their own houses inside the "hall"? very curious about this.
6] the "lot" made it feel like completion would create a building, not a street sign. maybe that's just a placeholder system too?
anyway, everything present worked well and was fun. the placeholders were disappointing but it felt like all the basic mechanics work and provide a solid foundation for the group hall concept.