We might as well speculate about what TFs might make the list. The 50 "hot toys" are going to be toys that they expect a high demand for, particularly from kids who beg for them for Christmas and drive most of their sales.
My concern about MP OP is that it's more of a collector piece. I don't think kids will be asking mom and dad for it, nor do I think TRU is expecting to move a lot of units of it.
FoC Bruticus is a more likely candidate, since it's based on a video game. But again, is it something that's going to be a hot, in-demand toy this fall?
On the other hand, maybe I'm wrong that the list will only be popular, high-demand items. Maybe TRU will use it as a way to promote sales of big-ticket items like MP OP.