Dear Gary,
My apologies for this late reply. I read your article several times, needing to step back.
Well, I entirely agree that the transformation of a n-D space over real numbers into a space over complex numbers gives at least a n-D+1 space. Each high-school student discovering complex numbers knows that this stage of her/his mathematical life implies an extension from the real line to the complex plan having a real and an imaginary dimension. This point is generalizable to any passage from a real vector space to a complex one.
Personally I always thought that current formulations like "The passage from Newtonian physics to SR is a passage from 3-D physics to 4-D physics" are not really exact, and that the correct formulation is "The passage from Newtonian physics to SR is a passage from 4-D physics to 5-D physics." Obviously, Newtonian physics needing 3 space coordinates and one time coordinates operates over a real 4-D vector space. The essential difference between Newtonian physics and SR is that in Newtonian physics the 3 spatial coordinates and the time coordinate are mathematically speaking identical, whereas in SR, spatial coordinates and the time coordinate are equivalent but not identical. Within Newtonian physics, there is no mean to distinguish mathematically the real time coordinate from the in turn real space coordinates. In SR, the intervention of i say in time intrinsically distinguishes the latter from space. Well, but because of its respectively real and imaginary dimensions, time is a plan. So SR operates over 5 dimensions.
Now, "historically" speaking, if your approach leads to a "coincidence" with the result of the Paul Scherrer Institute experience rectifying the diameter of the proton, it is not simply a "coincidence." Thanks to symmetry in prediction and retrodiction, a theoretical result going with something already known, but obtained on a different basis, is equivalent to a confirmed prediction.
But for obvious heuristic reasons, the confirmation of a prediction about something for the moment absolutely hypothetical would be more striking.
Do you think that your approach implies such possibilities?
Once again, all the best;
Yours sincerely
Peter