Thilosophy,
Every 4 months or so, I think of ideas about how to expand Tie::Hash::Sorted when I see questions asked about how to do things with hashes (usually getting around limitations). Unfortunately, these things don't really have to do with sorted hashes necessarily and I think about sub-classing and well - I never really do anything. One of the ideas that I had was allowing for localizing of the each iterator so that it could be restored when needed. This isn't something hard to do and if you would like to implement a tied hash that does this - let me know and I can give you a few pointers.
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