I also look forward to other's spiritual leanings and musings concerning the revelation that the heavens will be rolled back like a scroll.
I think the sky rolling up like a scroll contained in Rev 6:9-15 refers to a man made event. It's not so much the sky rolling up, but retreating at the advance of the debris kicked up by war. It's the debris that blotted out the sun and caused the moon to appear red. Matt 25, Daniel 9, 11, and 12 give the clues, along with the full context of the opening of the 2 seals. The last to be saved was born, as per opening of the 5th seal. The desolation is the abscence of of those who would be God's people, and was caused by man. The 6th seal containing the rolling up of the sky in retreat of the destruction, is the end.
"Light, no time passing, but time passing for other observers"
The electromagnetic field still exists in time. Any photon flying through the vacuum still interacts with the virtual photons, and other particles in the vacuum. As it flies along, it interacts with all possible particles contained as pairs within the vacuum. In classical EM, it is considered polarization of the vacuum and results in the permittivity and permeability of free space. Field theory just elaborates on the details. The interactions are the clock which ticks, and cause the speed of light to be limited.
The photons, particles of light, are movement of energy through the vacuum. The field is the polarization of the vacuum. If it's simply a static field, the photons pop in and out of existance and dance in the sea of virtual particles. If the field is not constant, they move in some net direction at the speed of light, dancing as they move along the way in the sea of particles.
The speed of light shouldn't be taken as a boundary. It is just the result of interaction. The boundary is a limitation that limits life in this world to this world. Life here must rest on the dust, which is the underlying physics, that supports the function of sentient, rational beings.