Why no original EPF missions on cp journey?

Don't get me wrong. I love that all PSA misssions are available and that the fact you go through the closet when you complete all of them is the cherry on the top. The custom EPF mission is fine, however as a kid I never got to play all of the EPF missions. They seem really cool and I am curios if they ever plan to add them in the future (or any new EPF content in general)?