What good is flushing out the moderates if you lose the vote? It would not be a pure "donk" filibuster. It would be a bipartisan one. That would provide cover for the "moderates" with their targeted audience.
Because I do not think that we would lose the vote. We need two votes. Graham, DeWine, (and I think), Warner would support breaking a filibuster on these prsidental appointments.
Landreau and other red state donks would have to follow along with us. The best thing (for us) for the donks to do is to try to filibuster bolton.
Bottom line? The donks do not have the votes to maintain a filibuster.