Better Error Reporting

In CRM/Member/BAO/Membership.php, when using import.php to add Memberships, adding the following bit of error output would've saved me an hour or so:

$error['is_error'] = ts('The membership cannot be saved. No valid membership status for given dates. Please provide at least start_date. Optionally end_date and join_date');

instead of just:

$error['is_error'] = ts('The membership cannot be saved. No valid membership status for given dates');

I had no clue from "what" I had to add to please CiviCRM. Not until I started debugging and look in the code.