Truncation of subject line, without wrapping, in classic view causes change of subject to be missed

[Graham Perrin]

Example: <http://n2.nabble.com/Mailing-List-Subscription-Reminder%3A-repeated-pleas-to-%27Don%27t-show-this-message-again%27-are-ignored-%28Nabble-2-embedded-at-plone.org%29-%28Safari%2C-defaulting-to-accept-cookies-%27Only-from-si-td1095625.html> (screen shot at the foot of this message).

Whilst I know that one of the three subject lines is different, an ordinary reader would never notice.

Improvement suggestion

Add, to the classic view, some way of highlighting the subject line when it differs from other subjects in the thread.

Ideally:

 * wherever the subject line differs, do wrap (to multiple lines) and do not truncate (to a single line).

Thanks
Graham