Yes I have an all in one program I use and mention before that does everything and .got files.
AI Scripts
GRP Files
All DAT Files
Palette Files
TBL Files
GOT Files
LO? Files
TRG Files
iscript BIN Files
FNT Files
Tileset files
PCX Files
MPQ Files
and many more.
I see you are aware of the way the programs work with the extensions. Most of these work for warcraft 2 files from the mpq too. PyMS is a great program for most of your editing needs. There is many more useful programs here
http://www.campaigncreations.org/starcraft/resources/programsSome only work for starcraft but will handle certain setting in .got editor even though it's starcraft stuff.... be careful and back up don't corrupt your hours spent modifiying.