I made a hack for Secret of Mana. It's primarily a text hack. The goal was to improve upon FuSoYa's script expansion by removing censorship and improving the localization.
For more info and a proper download link go here:
https://www.romhacking.net/forum/index.php?topic=27418.msg368191#msg368191 (https://www.romhacking.net/forum/index.php?topic=27418.msg368191#msg368191)