Request: improve differences reporting when number of elements differs

[PunchyRascal]

Hi, I was directed here from kingpong/perl-Test-Spec#43 where we discussed improving reporting of differences in Test::Spec.

Would it be possible to improve the difference reporting when the compared objects differ? In case number of their elements matches, the diff is shown, but not otherwise:

   got : array with 5 element(s)
expect : array with 6 element(s)

vs.

 Compared $data->[0][4]
   got : 'foo-downloaded-content'
expect : 'foo-downloaded-contenta'

The first case does not help much to understand what's wrong.