So I was a surprise to learn After Effects has this 3D function. I've been learning to animate in this program and it's pretty straight forward. You can do some nice hinged puppets by adjusting the pivots and parenting flat artwork together. There is a way of doing the equivalent of scrubbing through a nested symbol like in Flash or Toon Boom to do lip sync. This is done through importing image sequences, and you can use it to do a more traditional style drawn animation, but I'm finding it's very hard to edit, but it does have this 3D function like Harmony that I've mentioned.
I thought this would allow me to get the 3d effects I want and save me the cost of upgrading to Harmony but I must be doing something wrong. I took some artwork from a past personal project and a future piece I'm working on and set them up in 3D using After Effects. Even in the program as I scrolled through the animation I got planes dropping out or jumping levels. I thought it might be a graphics card thing but even rendered the planes popped in and out. If anyone knows a fix for this I would love to know. It may be a format setting or something because the look is totally different from a rendered TB scene.
First test in After Effects with dropped layers.
Sec test using After Effects with dropped layers.
Test using Toon Boom Animate with AE floor
Update: I did get the scene to work in After Effects without layers dropping out. I had to insure there were not intersections where one layer momentarily penetrated another.