Locke's theme has always been one of my favorite tracks from FFVI. I used to let my SNES just kinda sit during the Locke + Moogles fight just so I could have the song loop over and over.
So I really wanted to like this. But it just seems to go so far away from what I liked from the theme. I liked the swelling uptempo grandeur of the original, the snares and horns providing one hell of a heroic atmosphere, which this remix skews from completely. If I had gone in anticipating an experimental Japanese-style synth mix, I'd probably have understood and accepted it differently. But outside of a brief point around 2:00, this was an exercise to stay with that I didn't find enjoyable, no relief in sight from constantly diving strings and voices that cacaphonied unpleasantly, with my mindset the entire time being "how is this Locke's Theme"?
You can bring up the Rachel callbacks, and it's neat a song references the connection, but I can't think of a song off this album that's less suited to the frequent mental exercise of "if they remade the game, which remixes should replace the original versions?" than this one. I think that summarizes my issue with the song (and it's probably a problem with me rather than the song). I don't dislike the musicianship or singing, I just dislike how different it is from the original in terms of spirit and theme.