From what I have gathered, there is already an 'Encyclopedia Ermaria' for the Exile/Avernum works of the community, yes? If so, I would advise against a similar name for the Geneforge-site.
Both 'The Sucia Island Archives' and 'The Library of Sucia' don't convince me either, for a couple of reasons. A name for a project like this needs to be a catchy one. One that leaves a good, professional-ish first impression. Neither of the two suggestions mentioned before did this to me, so I'm forced to vote against them.
So I'm left with 'Sucia Archives', which to me doesn't have any of the filler the other titles have, but yet gives the end-user the same information of the site, and thus results in a name that not only sounds nicer, but is catchy and easily memorable.
But I am, of course, biased, since it was me who suggested the particular name in the first place.