The designs are perfect save for the dollar sign (it can be easily confused with the already used letter S) and the star (it definitely could be better, but I understand where you're coming from since the space is too small).
About the letters I know Xseed were the ones who replaced those with ABCD..QRST letters in that order, but that's an area that could use improvement have we figured out the hidden message behind that specific (definitively not random) letter sequence and a way to transcribe it in English without repeating letters somehow.
About the letters I know Xseed were the ones who replaced those with ABCD..QRST letters in that order, but that's an area that could use improvement have we figured out the hidden message behind that specific (definitively not random) letter sequence and a way to transcribe it in English without repeating letters somehow.