I dunno, it still seems a bit lopsided to me. Ignoring the question of change, how does undeath help to balance life and death? If the undead are intended to weigh-in on the dead side of the equation it would seem to be a counter-intuitive option. The undead walk around, struggle, experience and consume resources much the same way the living do; in that respect they tend to make death itself much more like life. In effect, they weigh in on the side of life and only help to unbalance the equation; both the living and the dead are now alive and kicking around, leaving fewer and fewer beings to just be plain old dead. Add to that the fact that the undead don't ever come to a natural end; they just keep going and going and never get reborn. Even worse, they propagate by killing the living and in turn produce offspring who are equally timeless.
In effect, unless the living take it upon themselves to destroy the undead, all life everywhere will eventually be subsumed and replaced with undeath. There will be no balance between life and death, simply a single unchanging homogeneous whole that has effectively replaced both. I suppose some might view that as a sort of balance between the two... Is that the "balance" your god is seeking to bring about?