I've been reading through James Edwards' commentary on the Gospel of Mark and came across this interesting suggestion for the ending of Mark. Is this a new idea and how plausible do you think it is?
From Edwards, pp. 503-504:
How Mark may have ended the Gospel is, of course, unknown, but one tantalizing piece of evidence allow us to make a brief and modest attempt at a suggested ending. We have noted throughout the commentary that Matthew frequently follows Mark quite closely. That is particularly true of Mark 16:6-8, where the report of the women at the tomb in Matt 28:5-8 parallels Mark nearly verbatim. On the basis of this parallelism it seems plausible to suggest that Mark originally ended more or less like Matthew 28, with the exception of the report of the guards at the tomb in 28:11-15. Two pieces of evidence under gird this suggestion. First, Mark leads readers to expect an appearance of Jesus to the disciples in Galilee (14:28; 16:7), just as Matthew reports in 28:9-10. Second, we have noted that the authority (Gk, exousia) of Jesus is one of Mark's signature motifs for Jesus' nature and bearing. Every Markan episode of Jesus'' filial authority as the Son of God is reproduced in Matthew. [note 25] The only place where Matthew includes a reference to Jesus' exousia that is not found in Mark is in the parting commandment of the resurrected Christ that "all authority (Gk. Exousia) in heaven and earth has been given to me" (Matt 28:18). It seems plausible to suggest that Matthew also gleaned this reference to Jesus' authority from the original ending of Mark. Thus, two things Mark has lead us to expect in a resurrection narrative - an appearance of Jesus to the disciples in Galilee and a transferal of his authority to the disciples - constitute the essence of Mathew's ending in 28:9-10 and 16-20. Those seven verses have as good a claim as any to being the substance of Mark's original ending.
Note 25:
Mark 1:22//Matt 7:29; Mark 1:27//Matt none; Mark 2:10//Matt 9:6; Mark 11:28//Matt 21:23; Mark 11:29//Matt 21:24; Mark 11:33//Matt 21:27. Matthew does not reproduce Mark's second reference to Jesus' exousia ("authority") in Mark 1:27, however.