I would like to see this for any object (mesh)

This is planned, but can take a while. Instancing on sprites is not so hard, but instancing animated models becomes really messy.

hmm there are nvidea tech demos out there, where at least over 1000 (complex) models are instanced in different animation states (ofc i do not know the restrictions of the code in this video - i'm pretty sure that this system maybe relativly limited).

But to get to the gist of my post: As you already said it's "pretty" easy to implement Instancing for Sprites (as there are a lot of articles about it, in the net), would it be possible to implement this a little bit earlier? Would be a wonderful way to create a much more realistic Gras-System

I would need it for my gras and particles too

Nice feature, but bad to see it's for Pro only.