|Shame that in this interpretation, the Man looks more like a grandfather than a son.|
The Glory that Ezekiel meets in Ezek.1, is not an impersonal light-bulby type glory, but a personal one who later in Ezek.3:23 stands and talks with him.
In fact, He looks similar to the Man, Daniel sees in Dan.7 and the Man John meets in Rev.1 and given that only God can deal in the impossible - like being eternal - I reckon they are all appearances of the same person. Yet no one has ever seen God (John 1:18)
So no prizes for guessing who I think it is - the eternal second person of the Trinity joyfully and obediently revealing His unseen Father to the world and fulfilling all his Father's purpose (Matt.11:27, Rev.1:17, Heb.1:3).