As we are finding out, there are alternatives that we dont know about, or dont seem relevant. But---in the case of the "aircraft wreckage", we hope it is the Electra, but as Gary (I think) stated somewhere, it could be a plane we dont know about. I mentioned a Japaneese seaplane, because we can account for all but 2 locations of crashes in the Phoenix area. The B17 and a PBY went down at sea, with no locations, but we dont know about Japaneese air activity. I would assume that during the war, they had fights in the south Pacific Islands, but I havent looked into that.
IF the ROVs do find the wreckage we are talking about, and it IS NOT the electra, then we are opening another mystery. I for one do hope it is the electra, but I'm open minded enough to think that it may be something else.