Fortis:
You may remember me as the guy who got stuck into the concept of a contracting universe (space and contents). My model for that was an oscillatory one, which alternates between, possibly near sinusoidaly, with 'c' being the instantaneous velocity of contraction at any particular place, and time in the cycle. At the moment of greatest expansion, c would be zero, and space would begin to contract, with the value of c increasing until the contraction began to decrease, then c would begin to decreas as a consequence. until it became zero again as the universe reached its smallest possible size, and began to expand. So that is ONE universal constant which is changing with time in a predictable fashion.
With such massive changes in the status of the universe going on, it seems inconcieivable to me that ANY universal constants could remain unchanged, even when measured with then 'current' values for length and time.

Of course if the universe is not cyclical as above, then all of the above is pie in the sky. but that model explains a lot of odd and hard-to-model physics, as well as making changes in universal constants seem probable.

But I beat that horse in an earlier thread.

OldAlbert