Shutter this project. Put the idea on the shelf, reboot, and try again in a few years. I just don't what value a "fixed' Anthem has at this point. At best, you achieve 'thanks, you made the game you promised half a generation ago." But if the salvage attempt stumbles at all, it only underscores the game's real and perceived failures.
If enough of the actual boots on the ground dev team have the drive and desire to make the effort, then it's at least worthwhile for them. But Bioware is already being dragged through the mud as it is, if the effort to save it is some exec's attempt to pull off a AAA No Man's Sky story at the cost of an already struggle dev team... that sucks.
It really just seems like there are more positive outcomes from moving on, at least for now, than continuing to beat their heads against this wall.