I really like this mod. However, I don't like the way that the powers are seperated into four seperate spells. Instead, I suggest combining them all into two spells or a single spell, such as:
Teleport and Blink become a single spell. If cast on an entity or opponent, then it functions as the current Shadowstep. If dual-cast, it becomes Omnipresence.
I also would like to see something similar to the time-stopping "isolations" of the Psijics. A new spell stops time, excluding the entity on which it's cast. The spell costs nothing to cast, but continuously drains magicka at an expensive rate (tempered by skill level in whichever school of magic it belongs to) until it's un-cast (cast again while time is frozen) or magicka depletion occurs. Other spells could be cast as normal while the spell is active, but that would be viable only if one was a very powerful mage and had plenty of magicka to use up.