Sometimes a movie can be wonderful even if it is far from perfect. For me, the key is often acting. A great performance makes up for a lot, and a great ensemble is even better.
Emma. is a good movie ... I don't mean to suggest otherwise. Director Autumn de Wilde, with her first feature, and screenwriter Eleanor Catton (also her feature debut), make the old recognizable. They take great care to make their movie seem real to the time of Jane Austen's novel, but while doing that, they also make us feel as if Emma and her friends and family are people we know right now. It's not just a period piece, no matter how well they recreate the period.
But in the end, it's the acting that raises Emma. above the norm. I often say, if there are many good performances in a film, the director must get at least some of the credit, and so de Wilde deserves mention here, as well. I only recognized a few of the actors ... Gemma Whelan was Yara Greyjoy in Game of Thrones, and Bill Nighy ... well, I would say he can make anything good, but even he couldn't rescue the Pirates of the Caribbean franchise. Still, I love me some Bill Nighy.
I save my most fervent praise for two of the actresses, again unknown to me. Mia Goth (what a marvelous name for an actor) is quite winning as Emma's best friend Harriet. Goth has a way of smiling that jumps off the screen; you feel her happiness. Goth also has an advantage, in that Harriet is largely likable from beginning to end, so once we become attached to her smile, she has us in her grasp.
Even more impressive is Anya Taylor-Joy as the title character. She has remarkable eyes ... if Goth's smile is entrancing, Taylor-Joy's eyes take over the screen. More importantly, Emma is a complicated character, and between de Wilde, Catton, Austen, and Taylor-Joy, we see all of Emma's sides. She is not particularly lovable. She screws up and doesn't always seem to notice. It would be fairly easy to make Emma into something of a villain. But at the same time, Taylor-Joy makes us root for Emma. So when Emma gets her comeuppance, it is satisfying. But when she gets the true love happy ending, we're glad for her nonetheless. Emma isn't one thing or another, she's all things.
(Here is a letterboxd list of Film Fatales movies.)
(And here is a letterboxd list of Geezer Cinema movies.)