Hasta La Motion!

Is there a way of altering blending modes of your textures when they are connected to Cards in 3Dspace?

I assume the 3d world works with premultiplied images and when everything is flatten at the Scanline, the math for stacking the layers in 3d space is OVER.

My usual workflow when I want to "Screen", or "Plus" atmos elements that have to be placed in 3d Space is branching off a new Scene and Scanline Node and then add it to the previous flatten 3d Scene.

Not only I’m adding more Nodes to my tree but also it becomes less readable with all the arrows crossing around coming from the same RenderCam.

Is there a more efficient technique of achieving this?

Thanks!
Hope is clear.