The franchise is ruined (?)

Rating: 4/10 (4 June 2013)

Spoilers ahead!
Oh, how I loved the first Iron Man. Robert Downey Jr was brilliant as Iron Man, the origin story was pretty darn sweet. At the end when Tony Stark announces on public TV he's Iron Man: just awesome. I liked the second Iron Man too. It may not have been as good as the first, but Mickey Rourke was a pretty interesting villain and overall the movie was pretty sweet so all was well.
Oh, how I was looking forward to Iron Man 3. The trailer looked very promising: the Mandarin is a bad-ass villain in the comics and Ben Kingsley seemed to play him very well. How big was my disappointment when the Mandarin didn't turn out how he seemed to be and a very uninspiring other villain - Killian - takes over. No sir, I didn't like it.
There are still some goods. Robert Downey Jr continues to be a great Tony Stark. I can't imagine anyone else playing him. His ability to be an arrogant dick and be totally lovable at the same time is beyond compare. Also, the action and CGI affects are very well done. Furthermore, I liked the way Tony Stark has to reinvent himself after all his suits are destroyed.
But the bads are much more prevalent. Besides the aforementioned stupid plot twist regarding the Mandarin, Iron Man's suits break as if they are made from matchsticks, the arc reactor in his chest is removed with ease (if that's so easy, why didn't he do it in part 2?) and the goal of Killian is quite unclear. I blame the writing.
I hope Iron Man can recoup itself for the next one, but as of now my interest fades.