However, in showing me how to do that I decided to go another way.
Switching the established annoying message with map specific annoying messages:

Other samples:
mh-reapers][
OMG! WE'RE ALL GONNA DIE!!
mh-ussmc][
Ooh-rah!!!!
mh-radioactive][mutants
Has anybody else noticed they look different each time?
mh-skaarj][hulks
SKAARJ SMASH!
mh-unholy][crusade
GADZOOKS!
mh-psyche][
WTF IS GOING ON HERE?!?
mh-yeen][
THE MUSIC IN THIS MAP IS VERY APPROPRIATE!
Along with these, the guy that made MH-Brutes][+ showed me how to smooth out the textures on all of the maps I've got so unlike the original MH-Brutes][ all of my maps are starting to look a lot better than they did earlier this week...
...screenshot above was made before I started smoothing.