I love seeing new faces along with existing popular actors. Casting was fab,didn't not feel as though they were "new".
My suggestions are:
•They could've built up the romance between joy and annie ( both needed more dialogues!)
•Balu from uppumm mulakam, he is so hilarious but in this movie he was merely shown for a couple seconds, even unni. You have great people, use them more?
•All though fight scenes are somewhat thrilling, it could have been cut a tad..
One confusing element was the character changes. Jr ayyappan became Aryan and then Prithvi- this is all one character?
As a whole it was a good movie, something you can watch with your family.