I finished the game about a week and a half ago, so I've had a bit of time to consider how I feel about the game.
This is one of my favorite RPGs I've ever played. I liked everything about it. I loved the story, I loved the characters, and I loved XSEED's localization that made it all read so naturally. The thing that impressed me the most about the game was the sheer scope of it. It's incredibly dense, but it feels like there's purpose to it. I can tell you more about world of Erebonia than I can tell you about the last 5 RPGs I played through, combined. And despite the game being so ridiculously big, I never felt like I wanted the game to be over; at some point, I just acknowledged that I was along for the ride, and trusted Falcom to take me someplace cool.
Despite being a PS3 game and looking like a high-res PS2 game, this reminded me an awful lot of the PS1 era. The reliance on text over overblown cinematics, the brisk pacing of dungeons, and charm all brought me back to when JRPGs used to be great. And the soundtrack is among the best I've heard in a game.
So, yeah. I clocked in at a little under 55 hours, and I was completely satisfied with the game. Given XSEED's progress on the sequel, I'm really hoping it'll be out sometime in summer... but then, I haven't played Trails in the Sky yet, so maybe I should tackle those games first. I've heard Cold Steel 1 is one of the lesser Kiseki games, so if that's true... I might have a new favorite RPG series.