Holds up pretty well.
The game play aspect is the strongest, I still find the controls and battle system to be really fun. The problems, for me, come about when I'm trying to get immersed in the story or figure out what I'm supposed to do next.
I think as I got older I started to put more stock into game stories. Maybe you could blame the translation but the story seems very poorly written. It's only there to provide a basic explanation of things so you can get back to the game, which is common even nowadays but for a game I remember as being fantastic it was kind of a let down.
As for the objectives, I don't like games that hold your hand and blatantly tell you where to go, I believe it's always more fun to have to figure it out. But Chrono Trigger tended to be a little too obtuse about objectives at times. There are times where, I realized, if I hadn't already played this game so much I would be really confused about what to do next. This ties into the story writing a bit for me too. I frequently found myself wondering "Why are the characters choosing to do this?" It's sort of the same feeling I get when I play modern shooters: the purpose is lost or not explained until later or even not explained at all, you're just going through the motions so you can get to the next plot point.
In the end, I still love this game. But I'm only giving it a 7.5 because I'm a big believer that you shouldn't judge things based on how good they were at the time. Nostalgia doesn't equate to enjoyment for me. Everything should be judged by present standards because it's not about how much you used to enjoy it, it's about how enjoyable it is now.