[Agrippa]

Speaking about Cromagnoids its true, as a tendency, that they are more viscoese and slow, less creative, flexible and mobile, at least in comparison to Nordid and Mediterranid. They are more static in a way, but that doesnt mean they can't be aggressive, dominating and mobile, even on the contrary.

Tungids are an even more extreme case going in a similar direction compared to Nordomediterranid variants, but they were obviously quite mobile and expansive as Turks and Mongols in particular.

Furthermore we have to distinguish between different basic Cromagnoids, because especially the more classic variants are not that lateral, heavy build with a strong tendency towards fatness. This particularly true for the Kurgan-people which had a strong Nordoid tendency.

The main problem of the progressive Cromagnoids was the energy efficiency. In that way the derivatives are true saving variants like a smaller and lower performing car model of a bigger but more fuel needing "brother model".
This high investments must be justified and this was primarily the case if the nutrition was good and the positive selection high in a rather colder environment.

If it became warmer, Aurignacoid-leptomorphs were overall as or even more effective and therefore able to win the competition until the derivative saving variants used save spaces for their success through higher reproductive rates in subdominant groups or social classes, especially in the very unfavourable areas.