At the same time I would say that death, burial, and resurrection are pictured better by the immersion method.
Except for the fact that this is an anachronistic understanding of what it means to be "buried." It is taking a modern conception of burial (i.e., a body being placed beneath the surface of the ground) and imposing that on the text of Romans 6. It is true enough that we are buried with Christ through baptism into death, but what did Jesus' burial look like? He was placed in a cave with a stone rolled over it -- hardly an exact metaphor to the way (some) immersionists which to depict it. Furthermore, burial is not the only metaphor for baptism in the writings of Paul: "For all of you who were baptized into Christ have clothed yourselves with Christ" (Galatians 4:27). I'm not sure how one would depict that through immersion.
It was still a placing in the ground or internment. If you notice I never use Romans Romans 6 as argument. It is a totally different greek word for bury as is the word in Colosians 2:12.
There is an internment spoken of. It is in the ground. And there is also the concept of Coming out of the grave. Anyways, maybe we are thinking too much like the Western Culture. I definitely don't see this in the rituals and rites of Indians who burned the bodies that were suspended in the air by a platform type structure.
Anyways, As I said, I really don't have a dog in this fight.