At the moment we're still awaiting the announcement of who the new Doctor Who will be.
So naturally like all other fans who have yet to see the new actor in action I feel perfectly qualified to declare that the series will be "Ruined FOREVER"! (Yes I know that's a different site, but it sums up the point well.)
But seriously, yes there will be criticism from fans - organised fandom has always attacked the show of the day. But for once let's actually wait and see what the new Doctor is like before condemning him, okay?