OddJob. wrote:Tyranid Hormagaunts are beasts which means they can indeed move 6", fleet D6" and assault 12".
The leaping biomorph isn't quite as good: these models can only move 6" and assault 12" so lose D6" in charge range when compared to proper beasts.
nitpick=
move6", run
d6", and still able to assault 12", as a beast. There is no Fleet move anymore.
Leaping allows them to be able to still fight if within 3" of an engaged model, instead of 2".
And, as a moot point(

), that last bit - allowing a 3" engagement radius - may be
all it does for any Tyranid.
I still lack a definitive example of a current definition of Fast Charge (Let alone Fast Charge 12). It is rather well implied. . . but, as such I never use it without discussion.
ymmv
Also, "proper" beasts can not go up floors in ruins, and they fall back extra distances. Leaping causes neither problem, so it is not all of the bad things of being a Beast either.
/nitpick