the problem with that request is SE's inter connectivity requirement between the data centers.

They've already had to address issues with background connections between Canada and Japan a few times. If they break it out even further, then it compounds this instability even further. Alternatively they might be able to restrict DF to even smaller regions, but then you open a whole other can of worms that SE is very reluctant to get into---regional isolation. It was a VERY big step for them just to split off the JP region like they did.