I don't think I've played this since high school. Not only is the game itself still fun, but the characterizations are much better than I remember them being. The opening two hours are really strong, and there are narrative threads being woven into things really early in the game that won't come up for a long time. For the first four or five hours, the game manages to neatly avoid having dungeons that feel pointless or unfun. Even once we do get to a point where that starts to happen, the dungeons themselves are mostly pretty neat.
One thing I've noticed, though: The dungeons that I didn't care for as a kid, I still don't care for now. Lab 16 in 2300 AD, and the cave outside Medina villiage in 1000 AD, come to mind. These areas felt slow at the time, and now I feel like it may be because they feel like delays without any plot or flavour in them, which makes them the exception in this game. Each of them have an enemy theme, and maybe they're supposed to be training dungeons to teach you to use certain types of attacks in certain ways, but they're still not fun.
Some things that are interesting about time travel: You set out to change time, but early on, it seems like you're ensuring that time goes the correct way. You spend a bunch of time recovering, and then repairing, the Masamune. But it seems that repairing it is not possible without time travelling to 1000 AD and then 65,000,000 BC, which would seem to suggest that the existing timeline includes a bunch of actions that you take as a player. However, there are some small things I've changed, like being generous to someone, so that they will raise their children to also be generous.
This time through, Lucca is jumping out at me as an extremely cool character. She's brilliant, egotistical, and fun-loving, but constrained by how she thinks she should behave as quiet and polite. She even makes a comment about another character's sexism at one point, which really surprised me. I dunno, strikes me as neat.
This game is also delightfully short. I think I'm about half-way through, and I didn't play it all that long this weekend.
It's fun to revisit these stomping grounds.