Aside from the above, you need to try agnosmillennialism. It makes you indifferent as to what point in history
the rest of the beasts are to have/already had their dominion taken away, and whether or not their lives will be made longer/were made longer for a season and time.
agnosmillennialism is as nice as eating bacon & eggs for breakfast every day. I believe both your and
@Spiritual Jew 's interpretations of Daniel 7:12 once upon a time and twice together.
I don't see how being indifferent solves anything? One still has to make determinations about things, regardless. The way I see it then, assuming Daniel 7:9-11 is involving the GWTJ like some assume, it would make zero sense to tell us what happened to the rest of the beasts at a much earlier time if the time involving these verses have to do with the GWTJ. It doesn't fit the context, not even if meaning parenthetical. Let me try and illustrate my point like this.
Revelation 20:10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
As concerning the rest of the beasts, they had their dominion taken away: yet their lives were prolonged for a season and time(Daniel 7:12).
11 And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
12 And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.
13 And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.
14 And death and hell were cast into the lake of fire. This is the second death.
15 And whosoever was not found written in the book of life was cast into the lake of fire.
Seriously, does that look like that belongs there, even parenthetically? That is exactly what one is proposing about Daniel 7:9-12 if one has any of those verses involving the GWTJ.
But, if instead, we were to insert verse 12 into the following text, does it look like it could maybe belong there? I tend to think it does. At least more than it does if we try and parenthetically insert it somewhere within verses 10-15 in Revelation 20 instead.
Revelation 19:20 And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.
As concerning the rest of the beasts, they had their dominion taken away: yet their lives were prolonged for a season and time(Daniel 7:12).
Revelation 20:2 And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years,
3 And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.