After thinking about time contraction and what may happen at t=0.
The effect of time is 0 so eveything happens instantly, this means that you would exist eveywhere in the universe at the same time, so the space you take up would effectively be infinite, it would take 0 time to get anywhere but at the same time the length of your existance would also = 0. This offers a possibly new solution to the twin paradox, they would both live the same amount of time but one would appear to die younger than the other.
At the other end of the scale with t=infinity space would appear to shrink to 0, it would take an infinite amount of time to do anything so you would effectively be fixed to a small point in space for eternity. To observers in normal time the first would appear to move at infinite speed for an infinitely small time and the second would just appear to be fixed in space.
Perhaps time/ length dilation could be linked to wavelength, I am trying to work out why blue/short wave should appear closer than red/longer wavelength, that is literal, this seems to mean they are made of different amounts of time and space but with the total adding up to c.
I will try to explain my conclusions as best I can.
Imagine space as a wheel and time as its axle as the wheel gets bigger so the axle shrinks into it this combination is spacetime where we exist. The axle is infinite and t=0 is always on the rim. The wheel is not expanding straight out but spirally, from the principle of least time, this is where the angular momentum we see in the universe comes from and explains the difference between newton and einstein. Newton describes a series of concentric circles einstein is able to describe the slight difference in arc caused by the spiral.
Inflation is explained by the great difference in space and time at just after point zero or point of origin, see what happens at t=0 above. As time gets bigger so expansion of space slows down so inflation would be the equivalent of a nearly straight line at the start of the spiral.
If we take the supermassive black holes as points of origin we find spacetime expanding outwards from them, each galaxy with a SMBH could be treated as a seperate universe to simplify things, so what happens when expanding spacetime meets expanding spacetime well they cannot exist in the same spacetime so they push against each other causing the apparent expansion of space a bit like ever expanding frogspawn.
This is only an explaination of the structure of spacetime not the things we see in it although I suspect something like closed timeloops may be the answer.
I have simplified this explaination as far as possible yet still offered a solution for the twin paradox, angular momentum, supermassive black holes, the difference between einseins and newtons equations, the expansion of the universe, the multiverse and inflation at the start, no other models I have come across can do this.