I love the pack and it's my favourite one yet, but I agree that there are way too many bugs. It's got great CAS and BB and the game play introduces some neat concepts (eco-footprint & NAPS) but it was poorly executed.
I've been able to work around most issues, but a pack shouldn't launch like this. I'm sure they will address some of our complaints and fix the bugs in future patches, but... that does little to help our games now. I rarely buy any TS4 DLC at launch, and I don't regret this one, but I can certainly see how some people do. I should be able to use all the selling features at launch, without issues, not turning them all off. :/