I think I saw rocket launcher weapons in action in another mod, probably something by Deon or Putman. Yeah, all that crazy stuff like ammo that erupts in fire or an explosion of dust was almost as lethal to your own citizens as it was to enemies, so it didn't make it into this mod (well, except for the super sentinel, mines and "mined" sprite-bots). Although come to think of it, "balefire egg launchers" (dust + fire + irradiation) would make for a !fun! last chance weapon. "OMGZ, my fort is dying to Steel Rangers. I'll draft this mare, give her a launcher and I don't even care about losses at this point, just kill enough for them to leave".
Typical results of using such a WMD before "Godzilla threshold" was either liberal waste of ammo on roaming wildlife or killing your own melee squads that clustered around the enemy. Sometimes even hurting the pony using it, if the enemy was just 2 tiles away.
Anyway, in the mods that used(d) them, WMDs are typically meant for adventure mode where you control them manually which makes for a heck of a difference in friendly fire and ammo conservation.
> Do you want to know how big creature_pony.txt is? Notepad actually lagged when loading it.
I believe it was made with some version of Replica's pony caste script. I pity anyone who attempts to edit it manually. Oh and forget notepad. There's notepad++, notepad2, RJTextEd (that I used to write program for my master's degree), SciTe and many other better text editors. At the very least you want something that can search a file for a token and give you a list of all occurrences. You might also find regexp substitution useful.