I have zero problem bringing him up and giving 3 or 4 MLB starts, as long as the plan is seriously limit his slider usage (he's going to have to learn to do this anyways) and work the fastball and changeup to get himself to 2 strike counts on MLB hitters. As we have all seen, its impossible for any lineup in the minors to force some adversity from him, he could probably just pump the heater and get outs.
This really has never been a problem, the org has promoted and used guys who've moved well through the system which is SOP for teams like the White Sox. To get an idea of what its really like to have the entire franchise revolving around prospects look north, the White Sox have never been that overly reliant on prospects being the teams stars (even in the early 90's, when the Sox produced stars from their system at an historic rate).