The long lost daughter is not worth it compared to other uses of the fate cost. I can't speak for the rubbery murders. The soul trade is a very interesting piece of content, but it's a bit insubstantial unless you also get into the tragic tale of the regretful soldier, which is also fate locked. As for the extended breeding program, the pets are quite interesting, but not strong stat wise, compared to recent holiday pets like the scuttering squad or the upper end feast pets. They do give opportunity cards, which can be good or bad depending on if you find them useful. To get the complete set though, you need to buy into flute street also, which fate locked as well. Without flute street though, it does unlock an interesting series of opportunity cards and a BDR transport.