Great idea cerberusxp but I'm not sure if you get much joy with that here. Perhaps you should try a physics/science forum of sorts, or maybe you have already?
I've been thinking of starting something like that myself, perhaps some type of joint/collaborative site
But hey, I'm willing to join in doing some calcs/models etc. if you can start us off with something - you never know we might get somewhere
As Einstein was reported to have said "Everything should be made as simple as possible, but not simpler." I think we should start with clear and simple definitions of what we're dealing with. I personally started a thread a while ago to get to the bottom of the simplest irreducible 'components' of the universe and you're well on track with the 'space-time-gravity are all part of one fabric' statement

although 'gravity' IS something else
I am writing a physics paper at the moment and I've already gone through some rudimentary/basic definitions + some postulates based on them

(Perhaps the rest of the gang will get to the same conclusions, eventually) BUT what I'm battling with at the moment is LIGHT (EM) itself ie. Electro-Magnetic Waves. Perhaps just to start off some discussion this is what I've found...
EM waves are sine waves right, and they have a magnetic component orthogonal to the electro component. Now the transverse wave itself travels at c (approx 2.998x10^8 m/s) BUT if you consider the SINE path itself, anything on the sine wave travels at GREATER speeds than c

The more energy the faster anything on this path will travel. The speed of light c seems to be the transverse limit but it is not an overall speed limit inherent in the universe! What do you think? Do you see my point or do you require further elaboration?
Cheers
Guardian