Yong,
It may be better if you submit this as a Product Idea, since you're suggesting this capability be added to Creo Parametric.
Backgound information on AI (or .ai)
Adobe Illustrator Artwork (AI) is a proprietary file format developed by Adobe Systems for representing single-page vector-based drawings in either the EPS or PDF formats. The .ai filename extension is used by Adobe Illustrator.
The AI file format was originally a native format called PGF. PDF compatibility is achieved by embedding a complete copy of the PGF data within the saved PDF format file. This format is not related to .pgf using the same name Progressive Graphics Format.
Welcom to the forum.