Sure, discovery could theoretically uncover new facts. But adding defendants, amending claims, or filing a new lawsuit would likely add motions, briefing, more discovery, more delay, and possibly years to the case.
NWBO is already on financial life support. Extending the litigation timeline by years is not a cure. It is more delay.
The Canaccord settlement points the other way. NWBO settled with one defendant, and the 10-Q says funds are in escrow while it pursues discussions with other lesser defendants. That sounds more like NWBO looking for quicker, certain resolutions than trying to turn this into an even longer heroic jury fight.