Just finished the last Most Wanted side quest which I consider to be part of the "main beef" of Origins. I enjoyed it, they made it fun but it lacks a bit of originality and I didn't like that one of the Most Wanted quests revolved around capturing escape Blackgate inmates. I was hoping for a Calendar Killer bit myself. I get that this is the "spin-off prequel" so to speak, and that they made a new MP, but it would've been nice if they at least did something different and allowed us to maybe pilot a vehicle every now and then. That would've been advancement enough for me as that's been the missing piece of the puzzle for so long. Another thing it lacks is great easter eggs. Asylum and City just brought it big time where Origins tends to reference itself and barely moves out of the Arkham universe. One last negative bit I'll say is that I wish they'd allow costumes much earlier. You can't equip any of it until you beat the game and that kinda blows when the new 52 costume is a bit cooler looking than the one he's wearing. I also kinda feel like they let themselves be too inspired by the Nolanverse. I felt like they were trying too hard to concentrate the energy of the movies a bit too much.
That said, I will say that Firefly is one of the best boss battles I've played on the xbox 360. It's really fantastic and it's a damn shame you only got to face one flying enemy. Would have loved a ManBat sidequest of some kind. Could be the next "horror-esque" portion of the next Batman, hopefully made by Rocksteady. I also liked that the collectibles feel a bit easier and faster to find. Enough of a head scratcher to keep me guessing and even looking up a wiki for help, but still maintaining 98% of finding everything on my own. The ending was interesting. They made a reference to the Suicide Squad (you can look it up on wiki) and it leaves me wondering if they'll be the main focus in the next Batman or if we'll be getting a whole new comic book based game with Deathstroke as the lead. It would make up for his embarrassingly short, but extremely memorable moment in the game.
One last thing, I wish they'd let us just go back to boss battles, like a scene selection or something of that nature. Partly because I want to earn achievements related to Deathstork and Lady Shiva, but also because some of these were just amazing.