tiptopper:
To use the reason that there are too many stories in the Library would mean that nothing in the Library could ever change. Somehow that reminds me of the current recession caused by financial institutions that are "Too big to fail". In this case the Library would be "Too big to improve".
It's not a case of there being too many stories in the library for changes to be made as recent evidence will show with the recent addition of the sub-genre field, favourite and comment counts on individual stories, and prior to that, the addition of the content icons themselves and even further back, word counts.
However, as the library gets bigger the amount of work involved in adding yet more categories becomes greater and greater and it's all very well asking for more and more things but who is going to give up the vast amount of free time necessary to make the changes? It's very easy simply to enjoy all the library contents without stopping to realise the sheer amount of effort it takes to make it what it is.
If we look at the request for adding a "young adult" category there are at the time of writing currently 7,103 stories which have been classified as featuring adults (and there's still over 1,400 stories with no classification at all, three quarters of which are likely to feature adults so that's probably another 1,000+). Let's assume at the very least, based on the average word length of these stories, 10 minutes to read them and make the necessary update to their record, that equates to a staggering: 10 x 8,100 = 81,000 minutes!
So that's over 80,000 minutes of people's free time simply to add a "young adult" categorisation when site records show that despite offering facilities to locate stories by first letter of title, sub-genre, content icons for age, gender and sexual content, word count, author, synopsis search, last commented on, last read, most commented on, document type and so forth the vast majority of readers simply read whatever is on the Latest Loaded page. On top of which it's not even clear in a great many stories just how old the adults are.
And merely adding additional classifications to new items added to the library while hoping that someone at some point might deal with the backlog is not a good thing to do as we then end up with an inconsistent database so that's absolutely not an option we would consider. But if there's a group of people who collectively have 80,000+ minutes to spare and are prepared to do the necessary work involved then we can look into adding a "young adults" classification.