Silent Hill Downpour

Just use the list above, for 99,9 % of all games that is enough. If you see a lot of lines like "TODO: something FS something" when the game is starting to run then also add libFs, but otherwsie that should be it.

Automatic selection of LLE modules is on the short term roadmap: https://rpcs3.net/roadmap

Instant crash of RPCS3 (!) with libfs.prx and its derivatives, though.
I'll check periodically roadmap and these two games - Skyrim and Downpour, and list some results.

Only use libfs, never anythingthing else "fs", and only if the game explicitly prints some libfs TODO forever. Of the top of my head only Atelier really needs it. So for everything else use the list I posted, no more, no less.