I hated the film, and back when it came out, I spent ages outlining everything that was wrong with it because so many people who know nothing about Freddie and Queen loved it. In simple terms, it was shite. It didn't deserve a single Oscar. Most people have terrible taste in films for the most part, so I shouldn't have been surprised.
You'll find several historical threads here regarding lasering. It shouldn't leave actual scar tissue and tattooing over it isn't a problem - it's actually the goal for most lasering. That being said, it's NO fun and quite expensive. Cover options are usually the better route depending on what you're starting with.