I've registered just for this message.
I love this idea, I'm even surprised there is so few remixes of these albums, so I encourage you to continue.
I can't do music but I can help you choosing tracks.
You've choosen too much tracks for Star Ocean 4 whereas it's the cheapest Star Ocean soundtrack imho.
For Star Ocean 2 there is many very good town theme, maybe you could add one or two.
Pure a stream : http://www.youtube.com/watch?v=XzShumL0Ous
Weathercock :
Cuddle :
or not town
Pyroxene : http://www.youtube.com/watch?v=NzD5MnpTZ2w
Teary : http://www.youtube.com/watch?v=xR-ox-4V0IE
White the Heart : http://www.youtube.com/watch?v=BLYsbCaf7K8
For Star Ocean 3 I've tried to make a pick of interesting tracks.
So Alone, Be Sorrow :
Influence of Truth Appearance :
Rust Color :
Cutting Edge Of Notion :
Into A Storm Not Memorized :
Calm Mind Reflected in the Pupil :
Divine Indignation :
Reflected Moon :
For Baten Kaitos 1 I regret that Addressing Stars is missing : http://www.youtube.com/watch?v=n0EWL7WJZJU
And Tenkai Flower Temple too : http://www.youtube.com/watch?v=XyyJ_5oeiAk
Or it's Baten Kaitos 2 version The Hall Of All Creation : http://www.youtube.com/watch?v=sLiw025I8AM