No,MapHUD_SMSS.arc only bypass freeze after loading save data.
Your issue may caused by bad dump of NSMBW,I never got any freeze on die /return to world map with 1:1 clean dump.
MapHUD.arc cause the game crash,the file store in Layouts folder.
I use U8Mii.exe unpack MapHUD.arc and replace the MapHUD.brlyt from Newer Super Mario Bros,after I replace the file,I repack the folder into arc file.