The question of what would happen to the infohubs and other public features on the original Linden Home continents came up several years ago when Bellisseria was introduced and it was first hinted that the original LH continent and its copies would be shut down at some point. With the recent announcement that it is going to happen, this just became a pressing issue.
This includes 10 regions: Shareta Osumai, Shareta Osumai Garden, Elderglen, Tahoe Springs, Meadowbrook, Hyperus, Cape Ekim, Libani, Blendard and Threesun.
The Shareta Osumai infohub is probably one of the two most important out of these all, along with Cape Ekim. The Shareta Osumai build could fit perfectly into the Sakura area of Bellisseria. Not necessarily in its original form, but with Bellisseria's Sakura terrain and mesh trees instead of the old prim and sculpted ones. However the main features of the two regions are beautiful even if not state of the art quality and it would be foolish to simply remove them from SL's legacy.
Cape Ekim is not only a unique build but also hosts a quest starting at the lighthouse and then involving the dragon. While 2008-2010 public builds by LL often feature hidden places to explore and quests or treasure hunts with collectible items, Bellisseria has little to no such features. Cape Ekim, due to its theme, could be added to the fantasy theme of Bellisseria.
Libani, Blendard and Threesun host the Three Suns quest. Basically these regions could be moved to any part of Bellisseria where the layout of regions isn't complete yet, the only important thing about them is to place them close enough to each other so the quest wouldn't need much travel if someone doesn't want to teleport between the three regions.
Hyperus features a large tree house that, while its interior isn't stunning, would look really great in the fantasy area of Bellisseria - probably only if you remade the building out of mesh, though. The design is too nice to just let it go forever.
Elderglen would fit perfectly into the fantasy area of Bellisseria, especially since there are some interactive features: a fairy hunt and collectible items scattered around. The landscaping could be replaced with the high-quality items of the fantasy theme while keeping the inn and its features.
Meadowbrook would obviously belong to its new counterpart, the Newbrooke theme in Bellisseria. Basically the features in this region could fit in there as is, probably the terrain would be the only thing to replace with the Newbrooke grassy terrain. The modern art pieces, while not mesh but sculpted, basically look just like what you can expect in the Newbrooke theme as well.
Tahoe Springs... personally I have to say this build is such a low quality compared to all of the above that this could just go down, but I attached some photos of this too. There are a few similar community buildings at the trailer and log home areas of Bellisseria, so this one doesn't seem to be as important as the other ones.
It would be nice to have these regions preserved. If for some reason they couldn't be integrated in Bellisseria (even though the only thing about them is the lack of mesh items since they're from 2009) it would be appreciated if they could be moved to some museum estate on their own so people could still visit and explore them.