Directional smudge/blur would aid in the creation of weathering effects or better yet, a filter that adds different weathering effects at edges of active selection with user able to control color(rust, oil, etc.) , "patcheyness" (oily, dry-scratchy), direction of smudgeing, strength of smudgeing.
Panel line embossing, aztec/hull plate presets and tiling features, Text along path (a'la wicked zomby), basic vector line and shape tools...
ummmm....
import: illustrator *.ai, photoshop *.psd (with layers
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Great idea. If done with a wide enough scope, could be used for any type of real world modeling. Sign me up to beta test if you like Raven....
May your bugs be few (preferably none)