I keep hearing about that it's going to be a flop and all, but I don't see how that notion adds up if Hasbro makes this film correctly.
Now will it be a billion dollar blockbuster? Haha no. You have to be Disney in order for that to happen.
But nostalgia sells, especially in the form of animation/family movies. Even if the fandom is not what it once was, an actual My Little PONY (emphasis on "pony", as in "not humans" and "enough time for proper storytelling") Movie will get the attention of those who want to see MLP back at its roots, in addition to the large audience it already has. Not to mention that parents will take kids to take any animated film and MLP is the only one in almost two months.
I mean the freaking Smurfs making $500 million in 2011 and Trolls making almost $400 million has to count for something, right?
Also as for the backlash I don't think the same 25-30 trolls commenting "cancer" and "autism" and "f*ck Bronies" on YouTube counts as real hate, as most of them are from 12-15 year olds who have nothing better to do.
So really I see $200 million worldwide at the worst (if the film gets terrible reviews and botches the marketing) and $500-575 million at the best (if everything goes according to plan).
Just my $.02.