The scribble's success was the Voidwalker's first real step forward in the last thousands of years.
In the grand scheme of things, it was a "baby" step forward, as the power coursing through the scribble was too minuscule. However, this took nothing away from the scribble's significance, as, for the first time ever, the Voidwalkers had managed to break a path into the Void from outside it.
It was also the first fruit of Baiyi's ongoing research in Laws.
The scribble was far from perfect, though. First, another scribble could not be made, as only one scribble could exist at a time; second, the scribble could not transport living beings — something Mia's goldfish had proven. When Baiyi put the goldfish into the scribble, it appeared in midair and fell on Mia's head — dead.
Hence, the Voidwalkers had no choice but to wait for it to be developed before attempting to use it to free themselves.