So starting out, Id like to re-release some stuff. The Thracia Mag for GBA in particular. The new version is a lot more versatile, defining a section of free space with a list of classes that should use res to calculate attack instead of str. This even works for physical classes, so you could do some real wacky stuff with it if you customized the classlist.
Next order of business. This is a redone Intro BGM hack based off of @Sme original. The difference is, this one allows you to trigger Boss Music changes more than once per map. Included are Nightmare Modules to edit the songs and characters that these rules apply to.
Only hack I have left to post is something I will probably revise in the future. This hack, originally made by @TR143, makes any growth rate over 100 into a negative growth rate. If you put 101 in as a growth for instance, there will be a 1 percent chance that you lose a stat on level up. Like I said, I plan to revise this in the future, so you may want to hold off on using it, but by all means, give it a shot if you feel like it.