Yeah, randomizers are awesome. There's also Super Metroid Redesign, which changes the feel of the game substantially, with an entirely different map, different feel to the exploration, and different challenges. I'd recommend that one as well.
I'm a big Chrono Trigger fan but I haven't tried any mods. Are there any others that are recommended? I know there are some that function more as sequels, but I don't know how good they are.
As a fellow Chrono Trigger fan, I strongly recommend Crimson Echoes. It's a sequel, astonishingly well written, fun, and decently challenging. Clearly a project that was put together with love and attention.
And for other Super Nintendo greats: Super Metroid Turbo! http://www.romhacking.net/hacks/4778/ Chrono Trigger + http://www.romhacking.net/hacks/3691/ Zelda Randomizer https://alttpr.com/en