Moroni tells us that he had not previously planned to write more on the plates after completing his abridgment of the book of Ether. Perhaps as he wandered and hid from the Lamanites who sought his destruction additional thoughts came to his mind that impressed him to add a few more items to the record. Certainly he did not view these additions as nothing more than “fillers.” Recording things on the plates was not an easy or convenient thing. It required considerable effort and time. Thus we must assume that Moroni felt strongly that the things he was now to include were of special significance- particularly to his brethren the Lamanites of the last days.