Right now, all battleships and battlecruisers warp at the same speed of 3.0 AU/s. They're huge ships. It takes a lot of energy to get them pointed in the right direction and then hurtling towards that destination. But how awesome would it be if the attack battleships had a significant edge in warp speed?
The Mittani had an article about this that displayed the before and after effects of the warp speed changes reflected from CCP Fozzie's post on the forums.
But why? Why lump them all into the same groups. Why not bump up the attack battleships and attack battlecruisers to something like 2.6 and 2.9 AU/s respectively? It's not a huge increase, but it'd allow for some interesting dynamics. Just off the top of my head, roaming in attack ships would be ideal - fast, hard hitting, maneuverable; warping ahead of the fleet as support; and just being a generally mobile gun platform. It seems like an obvious idea, after it was pointed out. So what gives, CCP?
[Edit: The author of the graphs has been edited to reflect their true source. My apologies to Fozzie for not remembering you work!]