Well, I'd say “rough” density. What I mean by that is, because the supply function is so slow, the better way to attack affordability is densification. The levels of density we have in this country are very low by comparative standards. I know that the pandemic will cause people to be worried about densification. So far, there seems to be no evidence that density is correlated with higher infection rates, other than, of course, in long-term care facilities, which is a different case. People live separately, after all.
I live in an apartment building in Ottawa. In my building, there are steps to clean common areas. Therefore, I would say densification, and frankly, aggressive densification, not gentle densification, although that too is really what's required.