I think the 3D pieces are nice, but I don´t like the angle.
My suggestion: Use an angle that is as close as possible to the angle in normal over the board games, something like this (starts at 0:35): www.youtube.com/watch?v=jCK4N509M0w
Computer examples:
www.youtube.com/watch?v=oYtPPOuWkHU
www.tlkgames.com/products/3/3d-chess-unlimited/screenshots/large/3d-chess-unlimited_5.jpg
uscfsales.files.wordpress.com/2012/03/2012_0306_03.jpg
My suggestion: Use an angle that is as close as possible to the angle in normal over the board games, something like this (starts at 0:35): www.youtube.com/watch?v=jCK4N509M0w
Computer examples:
www.youtube.com/watch?v=oYtPPOuWkHU
www.tlkgames.com/products/3/3d-chess-unlimited/screenshots/large/3d-chess-unlimited_5.jpg
uscfsales.files.wordpress.com/2012/03/2012_0306_03.jpg