I remember when MSNBC used to have news in the primetime hours, but then they eliminated it in favor of talk shows and long-form. Headline News used to have news 24/7, but then they filled primetime with all talk shows.
I expect the same thing to happen when TWC expands long-form to three hours. Weather Center Live might disappear, and all live programming during primetime might cease. Live shows will probably only air from 4AM - 5 PM except for hurricane coverage and select severe weather outbreaks.