Dave's proposal is a good one IMO, but If you're doing lots of WIP, going back and forth etc, I can understand manually switching strokes and fills on and off can be a pain - particularly if you have lots of shape layers... although your example above suggests not... If you do need some more 'automation' I don't think it would be difficult for an experienced scripter to write a basic script that would iterate through selected layers and toggle stroke and/or fill visibilty on or off. You could do your animation on one set of layers, dupe the layers, toggle off visibilty with the script, offset position and render. Ask in the scripting forum - see 'subspaces' above.
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