OK, so I was thinking:
Going through certain types of terrain costs MV, but certain squads (Jungle kommandos, Desert Scorpions, etc.) really shouldn't be penalized, seeing as how it's their "Home Turf"
So I was thinking of optional Environmental rules.
For Jungle Terrain:
Models Equipped with Slashing type Weapons do not suffer a reduced Movement. (Jungle Kommandos, Sea Lions and ACG are meant to be Jungle Fighters, and all Jungle Fighters have some kind of machete type weapon, so I figured they could just cut their way through)
Optional Rule for Desert Scorpions (And any other Desert Troopers):
DS's do not suffer negative MV in a Desert Terrain.
What do you think, sirs?