Yes, Shambles, you may take that as official. Here, I'll put it in brown:

Your proposal has been noted, but it has been rejected because it imposes a cumbersome procedure and restriction upon our volunteers, a procedure which appears to be unnecessary. Note, however, that efforts ARE made to respect and preserve the thread originator's work, as space allows. Ordinarily, the original thread title remains intact in the original message in the thread. Also, thread titles are usually altered by augmentation of the original title by the addition of a clarifying word or phrase, preserving the original title if space allows. If it appears that a thread originator may have trouble locating the thread after a title change, the originator is usually contacted by e-mail or personal message with information on how to locate the thread.

This has been our procedure for a number of years. While it does not follow your specifications exactly, it does attempt to respect the concerns you have expressed.
-Joe Offer-