You like Grandia 1? Fine. To each their own.
I did not. I found it to be easily the worst of the series (aside from Grandia X, its direct sequel).
For me, the characters were not memorable - they were cookie cutter. The world felt silly and small. The characters did not "grow" - I wish they did, as it might have made things tolerable. I kept playing and playing that game, hoping it was going to get better, until I realized I was near the end and it still hadn't.
But that's my opinion. You found it charming rather than silly and pointless? Fine. I do not wish to step on your nostalgia.
However, I will not recommend a game I didn't like.