Took a look at the Transwarp page on Memory Alpha, and it says the reason Transwarp failed in the past was because the Dilithium used to that point became unstable at higher warp frequencies. In threshold they use a new form of the crystals that work better at higher frequencies. They could not travel at warp 10 because of the mutation. If what has been suggested, warp 10 is infinite speed, everywhere at once, then Transwarp used by the Voth and the Quantum slip stream are speeds on the warp scale of Warp 9.99+ but < 10. Why did they not try to use that knowledge to do warp 9.999999999999999999999?
NM, I know why. Because they were only in season 2 of a 7 season contract.
NM, I know why. Because they were only in season 2 of a 7 season contract.