Paradox would have to change their stance on it. Synthetics are portrayed in the Contingency events as looking identical to organics already.

But Paradox wanted it be obvious looking at a portrait which group the pop belonged to.

I'd be glad for them to change their mind as this is something I've wanted since Synthetic Dawn.

I feel like it would really cool if you could choose your main species portrait as a portrait for your robots after you research Synthetics tech. I feel like that would make quite a lot of sense for them to be so advanced that they are indistinguishable from organics.

Portrait change after researching Synthetics.