I agree with everything you're wanting here, Hattori :)
And man, I wish they'd hurry-up and show us the spec for seven!

Render queue for rendering multiple scenes. Self explanatory but check out how Hitfilm 2017 did it or any network render manager like  backburner.

Collision uses the mesh cage of the character instead of the primitives attached to the character rigs.

Customizable, animatable morph slider panel inside IClone.
Like the custom morph sliders in CC.

Hitfilm 2017 added Depth maps natively.
Maybe Iclone 7 can add it without using fog tricks.

http://hitfilm.com/pro/whats-new

Instancing geometry to save memory. Just use one mesh to save memory like the wolf in the video is cloned multiple times using instancing.
With some flocking particles its easier to do big scenes without performance hit.

Referencing is always an option in other appz. Meaning most of them can embed the files in the scene or link to them externally in the hd.
And there's always a way to package these files and send them to a render farm if needed.
As people are squeezing more and more detailed assets into Iclone scenes, file management is becoming a major concern.
Duplicated assets, scene that take very long to load, etc, would benefit from referencing.

This has been brought up in the past, and for reasons of portability of a project I would want to make that optional for those who want to reference things. I have older DAZ and Poser projects that are unusable, because the referenced objects cannot be found. Referencing requires things to stay in one place, so if you rearrange your stuff you're in trouble.

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Referencing items.

From other 3d packages we can reference/xref items and put them in a scene without bloating the file size of the scene file.
Right now IC duplicates all files from the library  when we add it to a scene. The file size becomes huge.

Deformers in IC7