Although we have very little information as of now to properly make a judgement in that regard, I wouldn't mind if the game is 100% primitive.
There are plenty of ways to make a primitive gameplay more compelling without falling in the classic resource grind.
Let's take tools for example. We could see different materials, increasingly harder to get, but also better overall as you progress.
Taking inspiration on the tier system seen in Primal Fear, it would be quite easy to implement it, so that you can't skip to the best quality tools immediately.
Besides, adding coal to force players to refine iron into steel (as in prim +) would be a good idea and justify the efforts in acquiring the tools as you could farm anything thereafter.
Aditionally, they could add different qualities, starting from "crude" -> "rough" -> "refined" -> "pristine".
- Crude tools would basicaly be made like our ancestors did by smacking rocks together in order to chip them.
- Rough tools would be built by grinding the components together with water (thus requiring containers) in order to shape/polish them.
- Refined tools would imply hammering down metal to shape, thus requiring primitive tools.
- Prisitine tools would require more advanced tools and even a proper smelter in order to achieve better quality of the required components.
Anyways, those are just some random ideas, but it clearly shows that with a bit of imagination, a more primitive gameplay is possible.