Additionally, one key goal of the new curriculum is to make all the projects testable. It's hard to write tests for some of the current curriculum projects, which is why some of these were moved to the optional bonus section. But this also means it would be hard to just add in the current certificates.
While the changing curriculum may be an inconvenience to campers currently in the midst of FCC, the overarching goal is to create an improved educational experience for all future campers. It would be difficult to make modifications to a curriculum like this without creating some inconvenience to anyone currently working through it, but the intention is to create an even better experience!