Everyone that is freaking out about this needs to read the message about how the warrants are going to be detailed -- they are going to sea. They will be sea to shore (production sources -- FRS/VT/HT) and back to sea. They are not supposed to be placed in squadron jobs that are your EP makers (QAO / NATOPS / AOPS) or DH jobs. The communities that the warrants will go to are VP, VQ, HSC, and HSL.
They are only selecting 10 pilots and 6 NFOs per board. Obviously, not all of those will make it, but it is still a small number of pilots. It will be a long time before the manning balance tips to the warrants.
My take -- these guys can provide an increased level of standardization both on the tactics side and NATOPS side (even though they can't be the NATOPS O, they can still be the NI or an ANI). It will take a few rotations to get the experience built up, but it is not a bad thing. The army warrants that I have worked with know their stuff, are great flight leads, and I have learned a bunch from the army warrants. Certainly that can't be a bad thing.