Duh. It will still turn out to be a disappointment. For example, during fertilization, an egg actually goes through a process of selecting a sperm. By what criteria? They are almost certainly environmental conditions (hormones, sugar levels, whatever) both during the selection process and when the constituents were formed. Hence, the epigenetic "selects" the genetic.
I never said the genome project was useless, but the results are of significantly less determinative value than was touted; hence the financial performance of the resulting products will likely be a disappointment to the investors who plunked down their hard cash to finance the project. Considering the power and complexity of epigenetic factors, it will take vastly better instrumentation and computing power than we have now to even observe the process, much less characterize it. We have a very long way to go.
What we still need to know in detail, for both the genomic and epigenomic factors; and for which sequencing the genome gives us the boundaries of the map at least; is what “roads” or “trails” lead to each genetic or epigenetic state.