What character is it for? Mike? The P4 Dork? If it's the Dork, then just distribute the CR2. Without the P4NM OPBJ file it's useless, so only actual owners of the Dork will be able to use it. If it's Mike, make sure that you put the morph in either a pure Mike1 CR2, or in an otherwise "empty" CR2. Ron Knights has an "Empty" Mike CR2 (only includes Mike1 facemorphs and expressions) that would work for this. If the new FBM includes elements of existing Mike2 morphs, then the only way to distribute it is as a MOR Pose Donor file, which wiser heads than I will have to explain, as I don't comprehend it fully, myself.

Remember, kids! Napalm is Nature's Toothpaste!