Legolas literally has no character development in the movies, and isn't really interesting once you really break down him down. It's not like he's well known for being well acted or having character depth. He's most well known for being a charming, badass pretty boy that is practically a Gary Stu, and I don't know if that's any better, really. I mean, Legolas is also iconic in the movies, and I don't know what reasons there would be that I could point to say 'this is the right way'.
Cuz his appearance in the Hobbit prolly shouldn't have been as forgettable as it ended up being.