I am not sure where to put this question. Please bare with me, I am not a professional when it comes to UE4.
My idea is to have some functionality like spore creature creator, where I have parts modeled, but can attach it to a body, re-size and rotate.
The idea is to make a game that I can combine 2 creatures. This should dynamically take some features from one and combine it with each other, say keep the arms, and use the other’s legs. Almost something like the old game impossible creatures.
So I already have a few parts modeled, however now to be able to use my parts to create a creature is a whole different matter.
Maybe this can help : https://www.youtube.com/watch?v=fEphUHrtjm4
Look into the description, there is a link to download the project 
I’m thinking about the same, but i don’t know 