Tip: Layer 3 backgrounds and tides disappear when you hit a message box, so plan your level around that. For example, you can add a sublevel without layer 3 at the start/midpoint, and include your message there.
There's not much use for this patch now that it's integrated into Lunar Magic, but it's nice for people who still use older versions.
During moderation, I made the patch appropriately detect LoROM and SA-1 (the lack of this could cause a crash on SA-1 ROMs). This is a problem with the obsoleted version, which is why I didn't deem it a rejection reason.