Unfortunately I watched this play out last Easter 2014. The resorts had tons of availability so I kept waiting and hoping they'd at least include Easter week in an AP discount. I even emailed Customer Service about the lack of deals and I actually received a call back from them. The CM told me the same song and dance "Disney doesn't need to offer deals because the resorts are booked at full price...." so I asked her to check availability for Easter week at BC, BWI, Poly, CR, and WL. She, of course, saw what I saw and that was wide open resort availability in every category with only a couple months til Easter. She was a bit tongue-tied at that point but did say to keep checking back because Disney wants to fill the rooms. I did keep checking back, no deals and still lots of empty rooms. They never did fill up and a deal was not offered regardless, so I booked through Orbitz with a 20% promo code.
In my particular case, Disney might be content with parks being busy during Easter week and not necessarily caring that the resorts are not full. I guess the people actually staying at the resorts are paying top dollar (full price), so that might balance out their profit...