ariana grande reminds me of the annoying girl at school with mediocre vocals that always gets asked to sing the national anthem or something for school events
the scariest thing about the Hunger Games films is when Caesar Flickerman legitimately makes you smile because he is the one that turns this twisted fight to the death into mindless entertainment for the masses and in that moment you realize that just for a second it worked on you.
In the book Mags talks but everything she says in indistinguishable. So I think it works well in film that she didn’t speak. It may have looked weird if in the movie she spoke a bunch of gibberish.