Just this change in body type is enough for Gaven to break even.
The larger the body type, the greater the diameter of the tunnels that the Purple Worm can dig. Coincidentally, the diameter of a shield tunneling machine seems to be around six meters, the standard diameter for tunnels.
If it were the original size, they would have to dig multiple times, but now it can be done in one go.
Of course, the underground situation is very complex. In some places, a larger diameter might be needed, while in others, a smaller one is required, entirely depending on the situation.
The transformations of this Purple Worm extend far beyond that. Its appearance and special abilities have undergone varying degrees of change.
