(Hena @ Sep. 08 2006,14:37)
QUOTE
I'm starting to be more and more sceptical that the this is balanced. That ability is a monster. If gives potential 6 activations before other can have a say. And with 15cm range, there is no downside of being losing initiative and being intermingled. With 5cm range you would get it. With 10cm the PF will still be intermingled. It should be downgraded I think. What does it matter that you use large amount of activations as you will annihilate the enemy (or escape if being near for CC).
As others have said, CF is more useful against the 'nids than against shooting armies. In my games vs the 'nids, I've routinely put 6 formations up "in harms way" and then used CF to immediately activate them at the start of the next turn. I can use the CF to move them clear of danger or at least clear any intermingling and I get to shoot with everyone, even if they subsequently get eaten.
One possible downgrade option would be to limit CF to once per turn. Another is the 5 cm range, just like Hena suggests. However, I am not quite convinced that the ability needs to be toned down. It isn't nearly as useful against other opponents. It does work very well against LatD and 'nids, and (presumably) Orks.
(BTW, the story about bringing down a Warlord was not based on CF, and the thing did get to activate - once. My tournament Tau army is designed to kill a Warlord on turn 1)