Not only is everything Loki does exciting, everything is so fabulously executed until, well, Tony gets him and it's pretty downhill from there. However, I believe that he is rather sophisticated, even when put in the corner. For this, Loki deserves endless villainous points. He's sly, humorous and possesses sheer evilness. And that smile... He has that evil genius smile, so slick and beautiful that causes me to stare in awe at his beauty. He is truly fabulous.
"I am Loki, of Asgard, and I am burdened with glorious purpose."
The lines that Tom Hiddleston delivers as Loki are too perfect, too witty and evil. He has me cackling despite the anger I feel towards him and parts of me are completely and utterly in love with his evilness. Any hatred I feel as Loki plots is banished like Thor from Agard when he delivers that pretty, elegant smile.
The Tesseract & Thor's Hammer,
The Girl in the Moonlight.
P.s. Loki is perfect because... Tom Hiddleston: enough said.