Currently on mathoverflow, flags can be set for questions to be migrated to meta.mathoverflow, math.stackexchange, and stats.stackexchange. However, there are often questions that belong on other stackexhangestackexchange sites, such as cstheory.stackexchange, cs.stackexchange, scicomp.stackexchange, or hsm.stackexchange. Is there any chance of expanding that option (perhaps by including a "should be moved to another site, designate the other site below" box)?