It lays the groundwork by storing the needed metadata in the index, yes it needs more work and I wish there was more interest to do it. I really think the is a

It lays the groundwork by storing the needed metadata in the index, yes it needs more work and I wish there was more interest to do it. I really think the is a neglected area and if PG was able to merge in TF-IDF and BM25 there would be little reason to use a separate search db / engine and many advantages with it being integrated.