Yes Dodge Roll was one of the more useful moves, Along with Glide and Superglide (Sephiroth!!!). Though they weren't much on attack, they saved you from them when you need it most... Too bad Glide wasn't in COM... I suspect Dodge roll will be back, it is Sora's best avoiding move after all, especially when you want to dodge attacks...
Also I would like to add Quake to my list. Sure it does nothing to aerial foes, but it can easily take down the grounded and more annoying ones... Syncro was good to, all you have to do is get one heartless low on health, use it, and all of them are low on health... that is the best...