Hello Chris,
You forgot or avoided the "marks on the forehead?"
If you start with Rev 20:4 and work backward (hopefully you would agree that chapters 19 and 20 are chronological order of events. There is strong implication as such), with an amil mindset, we find "souls" (as you say, but what about "They came to life?" How can you conclude that John saw nothing more than souls? "They came to life" is pretty clear!

So unless you can show me something that doesn't appear to me to be there, I'm sticking to my question, "where are all the resurrected OT saints running around today?
Even if you were correct that John only saw "souls," (going on) that they "had not received his mark on their foreheads or their hands" implies that others have, that this prophesy of the "mark of the beast" has already taken place (amil view only).
Going back to verses 2/3, Satan has already been thrown into the bottomless pit (abyss). OK you say he is "on a chain" (speculation) Like Pastor Larry said, kind of hard to imagine Satan "prowling about the earth to and fro, seeking whom he might devour," while on a chain! But, giving you the benefit of the doubt, go backward a couple of more verses.
In Rev 19:20 it says, "But the beast was captured, and with him the false prophet who had performed the miraculous signs on his behalf. With these signs he had deluded those who had received the mark of the beast and worshiped his image. The two of them were thrown alive into the fiery lake of burning sulfur." Again we see that the "mark of the beast" has indeed already occured (to the amil),
and "the beast" and "the false prophet" have already come and gone, doing their "miraculous signs." Can you tell me who these two were in history and what signs they did?
God bless Chris (I really like most of your other inputs)