The thread-like build of the old boards' PM system was, in fact, very convenient to use. It's much the same as Gmail's current method of threading replies together to a more convenient build. It's just plain easier to read, especially if you want to review a certain part later.

But, as Garner said, if it's a hassle, drop it. No need to screw around with the code just for a small bit of comfort.

Anticipate charity by preventing poverty. - Rabbi Moshe ben-Maimon