I agree that in the short term the bottom end would be weak, but over time, the extra finances available would allow them to grow.
It would also mean that those teams around the middle of the table with "nothing left to play for" would be able to field the younger guys to allow them to develop and encourage their growth. This would be good for the clubs as it allows them to sell these players on, and its also good for the national side as young Scots would actually get a chance to play competitive football at a young age.
When we had to throw the young guys in during admin, it allowed them an early development and they have developed well. (Faddy, Hammy, Las, Pearson to name but 4)