I played it through and beat the last chapter a few times.
It has some good replay value. Other than that, it had average gameplay, graphics and sound. It was a pretty good game overall, and I think I like it even more because the Gamecube needs more RPGs.
Just let me warn you so you won't be disappointed later.
All those rumors about pressing button combinations on the splash screen after beating the game to unlock special features, they're all fake. None of them work, it was just a sick joke by a mean person who's twisted idea of fun was lying and crushing the dreams of all Mega Man fans.