Wishlist: Modding shortlist

[Maraxus]

I'd like to have a wish of moderate urgendness:

#landshape <creature id> and
#watershape <creature id>
Request for modding access to the effect that makes Oceania's troops change shape when they get to land (and back when they go to water again)

Or, if this would be possible make a new feature-possiblity out of it:
#terrainshape <terrain id> <creature id>
This command would then be able to shape your creature when you move it into the specified terrain-type, useful for mosters that are supposed to have a cave and mountain based combat bonus for example. To prevent huge lists of this command (the creature is supposed to change back when it then moves into anything not the specified terrain), a bitmask might be useful for terrain id.