Most guys aren't getting 3 days out of that bag without stashing something between the bag and frame. There just isn't enough room for a sleep system and food for multiple days. I like the layout for day hunting and the bag size makes no difference when in comes to hauling meat, the frame will haul the same amount of meat regardless of which bag you have on there.
If any of you are on instagram, First Lite and Exo's accounts showed Steve using the 2000 for a weekend September elk hunt. He showed you all his gear and how it packs it. There was still a good bit of room. I guess it all depends on how you pack and what season you are doing your 3 day hunts in.