What's New: Creo Parametric 4.0 > Part Modeling (Sketcher, Part, Creo Flexible Modeling) > Enhanced Draft Tool
  
Enhanced Draft Tool
When drafting surfaces, you can exclude areas that already meet the draft requirements.
User Interface Location: Click Model > Draft and then on Draft tab, click Options.
Release: Creo Parametric 4.0
Benefits and Description
You can watch a video that demonstrates this capability.
The Draft tool includes the Exclude areas with draft check box. When selected, the tool analyzes whether areas of selected surfaces already meet the draft requirements and will then exclude areas that meet the draft requirements from the draft modification. A connecting surface is automatically created with tangent transitions to drafted and excluded surface areas.
The Exclude areas with draft check box gives you more control over the geometric result of Draft so you can achieve the expected results.