Where do we stand so far?

Would our coiled-up Megaparsec-long nanotube contract at 73.5 km/sec? Imagine the coil flipping around, in the back of Frasier's car on the way to Pamela's house, as the nanotube gets shorter.

Or... What if the coiled nanotube didn't contract? Pamela and Frasier straighten the tube and do find, however, the expanding space drifts by each (now distant) end at 36.75 km/sec (relative to the center of the nanotube).

Are there a boatload of observations that the shrinking matter (and decelerating light) model fails to explain? Would the alternate model rescue us from the need for a Dark Energy concept?

Forgive me for flogging this horse. I am grateful to everyone for taking the time to help explain this.