There will always be people who complain about casting regardless of who the actor is, because it’s not the original actor.

But guess what? The show will still get massive ratings, and if the writing, acting, directing, and chemistry among the cast is good, the show will still be very good.

And I’m looking forward to seeing more age appropriate casting for snape, Sirius, lupin, etc.

Im also more excited about them sticking to the books and being able to include storylines and details that they couldn’t in the movies.