If mainstream Christianity did not believe ‘Option B – your new belief’ (I beleive it does) then it would logically have to change its view as that’s the Bible’s.
We are confident, I say, and would prefer to be away from the body and at home with the Lord. (NIV 2 Corinthians 5:8).
Jesus answered him, "I tell you the truth, today you will be with me in paradise." (NIV Luke 23:43)
I think when the Bible says the dead are 'sleeping' it is referring to the body as sure of waking up one day. It does not mean that our soul loses our conscious state but rather we should expect to be more alert as soon as we die, That that there is no harm in death for the Christian and that the body is just taking a nap and will be joined to the soul later on is what it means to say the dead are only sleeping. Sleep also means various other things in the Bible besides death, such as being lazy or spiritual laziness, etc. In each case the idea is that you can awake.
By the way, paradise and hell are seen in a sense as 'temporary places' where the bodiless souls of the living and the damned are placed until the final judgment. After, the souls (wicked and righteous) are united into resurrected bodies, the wicked in their new bodies will be thrown into the lake of fire and the righteous will live on a new earth. Hell itself (death and hades) will be thrown into the lake of fire which is the permanent place for the damned.
The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what they had done. Then death and Hades were thrown into the lake of fire. The lake of fire is the second death. Anyone whose name was not found written in the book of life was thrown into the lake of fire. (NIV Revelation 20:13-15)
Those righteous souls will live in their resurrected bodies on a new transformed earth.
Then I saw “a new heaven and a new earth,” for the first heaven and the first earth had passed away, and there was no longer any sea. (NIV Revelation 21:1)