I'm hesitant to put forward an opinion. I've been considering a variety of angles but I'm finding it difficult to arrive at something conclusive. Apologies if this rambles.
Just having a compendium of everything would be a waste of time, because the Fan Fiction subforum is a compendium in and of itself. So, by default, this compendium should only house a fraction of the available content. But, what content?
Would it be fan-favourite stuff? Popular stuff? That's all subjectively decided, and can potentially cause a lot of trouble. And even if not, there already exists a recommended fics page on the Katawa Shoujo TVTropes portal (
http://tvtropes.org/pmwiki/pmwiki.php/F ... tawaShoujo), which accomplishes more or less the same goal. Furthermore, JTemby has a similar "babby's intro to fanfics" compilation on Pastebin (
http://pastebin.com/PpGnE3nc) which, despite only having a few fics in each category, is still a hefty reading list. That is ignoring the arguability of which fics deserve to be listed there, which can change regularly.
So then is it supposed to be some kind of organiser? Like, listing fics based on content or theme or other such things? Perhaps it might be convenient if someone were trying to find something of which they didn't recall the name/author, but all in all it would amount to a very pointless list, because literally all of its content would exist right nearby and able to be searched through using the forum's search function, which could achieve similar results.
If we take a look at some existing compendiums for reference, we may be able to gain some insight to the matter. As atw_ah mentioned, Mehkanik/Thatguy hosts a compilation of all the fics posted in KSG, which to my knowledge contains entirely Pastebin links. This is handy, because Pastebin is not a searchable archive and unless someone were to post a link, no one would know of the target's existence. However, it falls to Mehk to scrape the archives for links and update the compilation himself, sorting each fic by its content. A monumental task for sure, one which is often so time-consuming that, nowadays, Mehk doesn't update for weeks or months at a time.
The same could be said of whoever might manage a similar compilation here. It would require a considerable time investment just to read everything submitted and thus decide whether it is acceptable for inclusion and, if so, how it should be categorised. Also, a forum is a relatively limited format for a compilation, given post length restrictions and other such things, which places a finite cap on the number of included fics. And, if that person should no longer want to or be able to maintain the compilation, it may be difficult or inconvenient to involve a replacement manager.
I briefly considered suggesting a kind of "Fic of the Week" thread, where people could suggest something that deserves some spotlight and, each week, something could have a (VERY) little piece done on it with a link. The idea was inspired in part by the "Fangame of the Month" topic on Pokécommunity. But, the problem there was that the spotlight was consistently shone on the already-big projects, and especially in a discipline for which many artists never finish their work, no net gain came of it. The same thing wouldn't necessarily happen here, but the question remains as to how the spotlight is selected or who selects it.
It's also worth considering the rights of the authors. Do they want to have their fics featured? Do they want them to be featured alongside others'? If they aren't able to be contacted, what should be done? Are fics taken on their merits, or does the author and his or her reputation affect the decision? It's a complex problem.
I've not been able to formulate a sufficiently pleasing permutation to any of these solutions. With that in mind, I think it may be best that such a thing not go ahead at all. It isn't really necessary, and will inevitably devolve into a circlejerk less about Katawa Shoujo than people flaunting their e-peen for having been included or whining for not having been included. It reeks of a meta-posting vibe; something which I know from experience ends badly, as was the case for Crispychat/CAPSchat way back when. The Fan Fiction subforum is adequate as it is.
Holy shit I wrote a lot.
TL;DR: If you think a fic deserves some note, then by all means advertise it in your sig or something. But making a thread for it is not the way to go.