Passing up on a potential All-Pro because another position is weak doesn't make sense to me. Also, Hafley pretty much trotted that out in GB last year. The stars of their secondary were their safeties -- Evan Williams and Xavier McKinney. Keisean Nixon and Carrington Valentine were average while Javon Bullard had a good year in the slot.
The way they went about the position in free agency also tells me there probably won't be that huge of an investment in the draft. My guess is they draft two DBs but neither will be on Day 1, unless Downs is there at 11 or a they really like one at 30 (Chris Johnson, Colton Hood, or EMW).