Dimension Shift was changed shortly before shutdown. It's now a toggle and you can enter the phased area and interact with the enemies. Still situational, but much improved. Here's the new power description:
Location-targeted AoE toggle. This power folds space in an area, immobilizing and phasing all targets within the sphere. Enemies who enter the area become immobilized and phased for the duration of the effect. Allies who enter the sphere's area of effect will enter the phase as well, allowing them to combat phased enemies. Detoggling this power ends the effect, bringing the phased creatures back into the physical world. Maintaining this dimensional distortion is taxing on the user, and cannot be done for more than 20 seconds.
Singularity rotates Crush, Lift and Gravity Distortion and constantly runs Repel. (Because its intangible, you can stand inside its repel field.) Can't be healed but has 90% resist to psi and toxic and 50% resists to everything else as well as status protection.