Is there a plugin to group geometry by layer?

[zxinfinity]

I'm looking for a way to maximize the efficiency for grouping objects by layer in order to clean up my models imported from Revit. My current workflow is as follows:

1. Right click on an object and select by layer.
2. Group selected objects.
3. Repeat steps 1 and 2.
4. Delete the miscellaneous layers of the objects I grouped.

Any tips on how to improve this workflow? Is there a plugin to do exactly what I'm already doing?

Thanks in advance!

[Gaieus]

I cannot advise on the Revit to SU workflow but here is the plugin: http://www.smustard.com/script/GroupByLayer