One is through a diversity within a given living group, and the second is through a diversity of different living group options within the system.
Diversity frequently conflicts with choice, and choice is generally afforded greater value.
This issue has not been discussed at any length within the committee. Freshmen's connection to houses are truly superior to anything available within the residence halls, even in the future era of RA's. The sophomore shuffle is not an obvious remedy to this inertia. MIT fraternities must fight the national cultural bias that fraternal living is antithetical to academics. This fight is time consuming and expensive.