We submitted a request for this feature 2/14/22. Daz 3D is a better character system the CC3.
The mere fact that this request has existed over 2 years with NO response from Reallusion, even if it is "We are working out how to do this", makes it clear that Reallusion does not care about its users. Your users understand that things are hard to implement, and that things take time. How you bring them along, is by communicating with them. Taking the disrespectful route of "Ignoring those complaining idiots until we figure out if, how or when we want to do his thing" is not the way. This is the sad unneccessary crap companies do that make users abandon them as soon as a halfway decent competition comes on the scene. They remember shitty treatment like this.
Considering how awefully overpriced their solutions are and how bad their customer support and pricing policy is (everything costs extra) I really have to admit I regret it A LOT that I have bought cc3. Simple things like body morphs should not be such big of a problem. And there is literally no support answering all those concerns only false advertisment for their products
well at last could be good if they could provide some answer about how complicated(hard work) or impossible it can be to do, because at last we can know if it's possible or no, because currently i'm using CC3 in my game project and have that possibility enable a very cool character customization system with much less time to waste, and the more automatized somethings can be more we can focus on work on game mechanics and level design.
It is possible to manually export base meshes and manually add them as morphs in most tools. Since the vertex order doesn't change, you can use tools like Blender's "Add as Shapekey" to add a new mesh as an additional morph. This is tedious, but works great for most facial morphs, however, you need to be very selective when it comes to body morphs. Any additional morph which changes the position of the character's bones (such as CC3_Male) will cause huge problems when animating your character, in fact most of the CC3 full body morphs move the bones in some way so you'll find problems like finger bones no longer sitting inside the mesh when you use the method described above. This is probably why exporting morphs is a tougher proposition in CC3. If you look at DAZ, their morphs tend to simply deform the mesh around a fixed skeleton so avoid any of the above problems.