I believe the Sacha Baron Cohen thing was that he wanted to make the movie about Freddie's hidden parties etc. while he wasn't really interested in the Queen story. I'm sure we all agree with Sacha looks more like Freddie but Rami is a way better actor and I think Sacha could've even ruined the movie, I mean has he ever played a serious character? After all he is known to have made dozens of gay jokes in the past while Freddie is a gay icon, so I'm not sure how that would've worked out. We'll never know.
I do agree a little bit with @Rex that is was kind of a bummer to later on find out that the real story was changed to make the movie story more powerful. Spoiler alert! Like f.ex. Freddie found out that he had aids after the Live Aid concert and they had actually been touring before the Live Aid but they kind of made it the grande finale in the movie by charging a bunch of emotion to that Live Aid performance by making it special by changing some facts. Still it doesn't change the fact that the movie was very good and powerful and I do kind of understand why they would change the story to give the movie a natural story flow.
I do agree a little bit with @Rex that is was kind of a bummer to later on find out that the real story was changed to make the movie story more powerful. Spoiler alert! Like f.ex. Freddie found out that he had aids after the Live Aid concert and they had actually been touring before the Live Aid but they kind of made it the grande finale in the movie by charging a bunch of emotion to that Live Aid performance by making it special by changing some facts. Still it doesn't change the fact that the movie was very good and powerful and I do kind of understand why they would change the story to give the movie a natural story flow.