Should absolutely be allowed to do it. RMS Titanic Inc. essentially owns the wreck. They control it -- for the most part -- and have all rights to salvage. They have done probably hundreds of dives to the wreck at this point, conducting research and recovering artifacts to preserve history. Almost every artifact you see in one of the Exhibitions around the world is due to RMS Titanic Inc. I can't think of a more qualified company to do anything like this, to any gravesite or wreck.
The stuff they're trying to save -- like the marconi wireless -- is truly historic. That wireless is one of the most famous pieces of communications equipment of modern history.
Not to mention, getting ROVs into the wreck to document, map, and photograph the interior would be just brilliant and doesn't disturb anything.