I don't mind these castings and am not judging them till I see a trailer im excited to see them in the film. I'm excited to see if they explore Scott's connection to Alex. I'm also excited to see how the three were when they first encountered
Also since we know this is new history thanks to DOFP. This will mean Wolverine is meeting them in earlier points in their lives then the original timeline meaning will he even have any feelings for Jean? Because in this timeline she is quite young compared to him.
Also I am excited for this movie since Erik's and Pietro's past will be explored and come on. No matter if you liked DoFP or not you know you loved that scene with Evan Peters as Quicksilver