Is there any particular reason why Epic isn't willing to publish the full Paragon assets?

I’ve gone through most of the Paragon assets, and I noticed that many of them are far from complete. A lot of animations and VFX are missing. Some characters are missing so much that you can’t even properly set up a basic locomotion animation blueprint for them. Gadget, for example, is missing some of its locomotion animations.

I can understand some of these things being accidental omissions. However, when it comes to the environment assets, it seems that what Epic released may be less than one-third of the original content.

This makes me wonder whether there is some particular reason why Epic couldn’t or wouldn’t release the complete Paragon assets. Is there some technical, legal, or other reason behind this?