Intriguing, but way too 'early' for my interest so far as 1/72 'armies in plastic' are concerned.
As an amateur and armchair archaeologist, these early humanoid races are of great interest; as is the fact that they are now being modelled in plastic.
But: somehow, early humans and proto-type humans in conflict just does not do anything for me - although I accept that this would have happened and did happen, often and in a very real sense.
I guess it is that lack of formations and 'organisation'...which makes anything earlier than, say, the Ancient Greek and Persian Wars difficult for me to relate to. I like my armies to form neatly into blocks/multiples of 10 or 12, and I think trying to gather Neanderthals into 'ranks' would be just a little difficult... :blush: