Don't know the subjects of your projects...and the level of animation needing...
In the near past (but i believe that is maybe always existing) a Creator of crazy worlds!
there was the incredible TwinMotion free in 2K ...Movies, Panorama etc... very intuitive the anti Blender! :)
Nurbs conversions is not really a problem export in OBJ + color material or in SKp format (Sketchup) from Moi ?

Yes seems always a free version! ;)
https://www.twinmotion.com/en-US/license

And seems this last version has terrific possibilities of animation!

Have fun ! :)