We know that he was of the Noldor who had returned from Valinor in the First Age, and they were all pretty tufty. We know that he was capable of defeating a Balrog, as he did during the escape from the sack of Gondolin. We know that The Witch-King of Angmar would rather turn tail and run like buggery than face him, as he did during the final years of Arnor.

Was there anything that Glorfindel couldn't do? (except face the Dark Lord himself) Was he capable of the sort of Songs of Power that such Noldo as Finrod (striving against Sauron in the dungeons of Minas Tirith) and his sister Galadriel (throwning down the walls of Dol Guldur) were capable of, or was his just a very capable combatant who overcame his foes with a strong arm and a keen edged sword.

After he died and returned back to Middle Earth was he anymore potent than before? It seems to me that he could not have been. In fact I would suggest that he was less potent, for it seems that whenever one of the Maia got tanned (Sauron) it took them time to recover all their power - did elves returning from the Halls of Mandos obey the same rules? Was it not the light of the trees that made the Noldor people what they were and while bathed in it they grew in power. With the trees gone, where could Glorfindel have gotten any more power than he possessed before. Is it possible that when the Valar gave leave for him to return to Middle earth they somehow enhanced him as Gandalf was enhanced when he returned as Gandalf the White?

Just a few thoughts.

Padster