Quote: (Curis @ 14 Jun. 2009, 22:07 )
Why +2?  Did you experiment with +1 first?
"+1" has been experimented with and often found wanting... the, absurdly common *laugh*, happening of a Lictor swarm showing up with a Blast marker and then failing to engage in its first activation was ridiculously frustrating. Tyranids are, even more than Orks, bred to close with the enemy and rip and chew them apart... it is the thing they are the best at, even when instinctive, Tyranids will attack prey-things.
They are just as succeptible to failing the other types of action as any other army... if people are complaining about the "too many fires" approach of Tyranids marching across the board, why aren't they placing Blast markers on the swarms to cause 1-in-3 of these rushes to fail? There's no garrauntee that all those swarms are going to be up there for the "big push" in the following turn.
As to the bonus to rallying: the grip of the Hive Mind is as strong as iron when Its creatures are linked, they instantly return to good order and are incapable of feeling any kind of fear or hesitation; why shouldn't they shed Blast markers easily? The "will of the Hive Mind" is what makes Tyranids so scary.