On the topic of Avatar, this is more of a personal thing, I loved, loved Avatar 1, I saw it around 5 times in theatres, but Avatar 2 didn't grab me at all and I was very disappointed with it, it didn't feel epic or grandiose to me at all, I was impressed by the visual effects however, they were leaps and bounds over everything coming out now and even Avatar 1, I watched Avatar 1 re release in IMAX just a couple months before Avatar 2 and Avatar 2 just blew it out of the water (pun intended) in terms of CGI and visual effects. I am hoping Avatar 3 feels more epic, something like the final battle of Avatar 1 or the destruction of the home tree scene.
I have a feeling if Avatar 3 has larger scale than 2 it is probably going to increase domestically.