I would guess that the "Glyph" system is just a rebranding of the Dawn of Sorrow/Portrait of Ruin magic system. Don't be mistaken--the magic systems were the same in both games, but different spells were just collected and used by different characters in Portrait.
I gotta be honest, here. I didn't really care for Portrait. I liked the idea of traveling to different worlds outside of the castle, but I couldn't stand the repeated environments and the forced grinding to level-up Jonathan's weaponry. I really like the Aria/Dawn of Sorrow gameplay, but grinding for spells should be eliminated. That part is just never fun.