Why on earth would you have %wow1, %wow2, and %wow3, instead of %{$wow[1]}, %{$wow[2]}, and %{$wow[3]}? In other words, instead of:

%wow1 = ( key => value, key => value );
%wow2 = ( key => value, key => value );
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You could have...

@wow = (
  { key => value, key => value },
  { key => value, key => value },
);
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Which is an array of hashes, instead of a bunch of hashes loosely related by naming convention.

I see no advantage to polluting your package global namespace with variable names that are tricky to manipulate when you could just create a single AoH structure.