New traits are being added all the time with various new packs which should have added impact on the emotions being shown but it all seems a bit "loose" at the moment. It looks like the basic emotional aspects from the base game are lagging behind and need to be worked on to catch up. It's as if they are unfinished, waiting for future developments.
There are some really nice emotional interactions in Cats and Dogs which affect mood for example. I'm finding it getting better after all packs added and the game has more depth than I thought. It's rather like we'll probably get more "death" emotional reactions if they supply us with a cemetary and mausoleum in the future but they should have been there from the beginning.