Hi there,
I’m curious about this answer too but i’m curious about it from another perspective. I think visualizing something like a 3D blend space might be achievable but then you might start thinking about 4D/etc.
The solution that I came with in my own tools and in other engines is to simply have support for blend spaces within blend spaces. That way you have a simple editor that’s either a 1D or 2D blend space and it’s easier to fill in content.
(Long time no see Epic btw)
Cheers,
Joakim