I can't wait to see the circles. This class looks pretty cool.
One thing I might add to Deconceptualize is some sort of penalty on a failed resurrection. Otherwise what's to stop someone from casting it twice?
Am God Am I is a pretty sweet ability. Originally I was worried about its power, but then noticed the conceptualist would have to drag somebody into his demiplane and things created couldn't actually leave. A question about the cumulative +1 though, because of how it's worded. Does it apply to the DC needed to escape or does it apply as a bonus to their save?
EDIT > Another question about Am God Am I. If the conceptualist creates bread and somebody eats it and then leaves, do they gain sustenance?