It's just that a concept that involves something like 10 or so dimensions as opposed to the current 4 is not necessarily simplifying things eh?
That's like claiming that evolution breaks 2LOT. You have to look at the entire picture to understand what's going on. Only from that vantage point are you going to appreciate any simplification. Unfortunately, gaining that vantage requires immersion in the subject. Reading Greene doesn't cut it.
Which is why I propose a test to measure the actual effect of gravity rather than argue about it.
Have you heard of the gravity probes?
What is arrogant and naive from my perspective is sitting back in chairs and arguing about the various "possible" and "impossible" (mathematical) systems without testing to know how the effect you are modeling really behaves.
You really are confusing practical cosmologists with theoretical physicists. It's possibly my fault becasue I have experience from all these fields and discuss the whole picture. But that is not how research is carried out. Why would a string theorist trying to produce a viable theory that gives rise to the observed particle families, working in a particle phsyics department, care about some possible tiny anomaly that even if it exists may or may not have a gravtational origin?
Until you know what the observed gravitational anomaly actually is
If there is an anomaly, IF and that is far from determined, then it is an observed accelerational anomaly. Whether it is gravitational or not is even less established.
Can you explain why all (cosmological at least) physicists aren't clamoring to find this out? Is there any way this would be counterproductive?
Because it seems to be an error. Nothing else has picked it up. The gravity probes which are far more sensitive haven't picked it up. It doesn't warrant huge spend on it... yet.
It may be a real gravitational effect, in which case there will be huge celebrations and millions of papers will be written, but we will wait to see if real evidence that it exists starts to accumulate.
It is far far far too early. Just becasue you've read about it and a couple of papers have been written doesn't mean that it is real. Far more has been written and published on crop circles yet they don't appear in many of my equations... yet.