@nhparent9, if I had to guess, Hill is a necessary dorm to have open because of its proximity to DRL, the engineering quad, etc., and the university’s athletic complexes. To close it for maintenance without replacement would mean that students would have to live significantly farther from those buildings.
NCH will be sufficiently close, at 34th and Chestnut, that the university can close Hill now to renovate it.
Just my hypothesis.