If either of these things were able to be technically acheived in a somewhat easy fashion, then I am certainly sure that Microsoft Flight! would be DX11/multi gpu/multithreaded/64bit - and it is none of those things.
They said they were working on DX11, which if you know anyone about legacy rendering engines, and can imagine refactoring one of FSX nature, it has to be a monstrous process. One that MS themselves didn't even do for the widespread commercial game in Flight! - as a matter of fact they did none of your requests. But they did add a much fancier UI!