> The value of a PhD thesis is the personal intellectual growth you get from putting it together. The end product isn't really the point.

This definitely varies by field. For example, there are some branches of linguistics where the big, important new monographs that move the field forward are often PhD theses (though typically the defended diss manuscript will get some very light rewriting and polishing before it appears from a publisher). After that, a scholar's publications over his/her career might be less ambitious and focused more on minutiae.