The film doesn't show how great he is. Instead it show how he bend down for the woman too much. He lost his potential and charisma here. The hypothesis of every case aren't too strong, they solved the case in easy way. Suddenly they found this and that eventually on the way (seems too easy to found I don't surprised at all), if you like Sherlocks way of hypothesis you might don't enjoy this.
If you see how Trixie too clingy to him it's weird too. She has good father but choose another man to cling with doesn't make sense. She even ignore her father when Lucifer around.
In here, I even see Dan have deeper and better characterized. Lucifer on the other side looks shallow character.
What might good is Lucifer is handsome, Chloe is beautiful what a good looking couple and all typical lux life in Hollywood. The unusual romance might good to see and interesting for fan girl-ing