SL was designed to be a virtual world created by its users. Lets compare Bellisseria and Sansara, as they are the youngest and oldest continents.
Literally everything there has been preplanned and prebuilt by LL and their Moles. You are merely a tenant in their prebuilt, regimented, gated-community/continent, where individuality and creativity isn't allowed. The continent has a bland soulless corporate feel to it , and doesn't even "feel" like SL to me.
The houses in Bellesseria are all US style wooden box houses, which to my English tastes and perspective are unappealing, ugly, and look like oversized garden sheds. Having searched the entire continent, it does not contain a single house made from bricks or stones.
Bellisseria's "houseboats" are incorrectly called houseboats. Their correct names are actually "Float Houses" (a North American name btw), which are houses built on rafts or pontoons, of which Bellisseria's are. Traditional real houseboats are converted boats/ships with houses built into or on top of them. Houseboats can be sailed around with their own engines or sails, while floathouses cannot and are moored or anchored to a fixed location.
Bellisseria's streets are all too perfectly straight, they look the same in every region, and are built on an uninteresting and unnatural grid system, which makes for a very boring straight line car driving experience, punctuated with right angled intersection turns.
The regions all look too similar to each other, almost if they have been copy-pasted down from a template, as its quicker and easier to do so. There are no unique landmarks to define and identify one region from another. No shops or businesses exist there either, because its purely residential only. No sandboxes for group creativity.
Welcome to your ready-made virtual world where you will never need to create anything! (Which is totally against the "virtual world created by its users" LL mantra.)
Bewarned. Bay City and Nova Albion were once the shiny new popular things. Now they're not....
The first continent. Historic. Unplanned. Organic. Chaotic - and even a bit ugly to newcomers who don't understand why Sansara looks the way it does.
Sansara's regions, parcels, builds, objects and lost prims were all built during a 16+ year time span from individual residents and creators not working to a predetermined overall masterplan. Sansara has a rich and diverse history and story in every single one of its prims - something that Bellesseria will never have.
The oldest 16 regions/sims of Sansara date from 2002 when SL was in Alpha and Beta test periods and was called Linden World instead of Second Life. At that time, complex mesh builds, sculpts, and even basic prims over 10 metres in size did not yet exist. Through invention and creativity on Sansara (and its younger sister continents), these creative elements were "invented" and incorporated into today's SL.
Sansara is a historic, creative and much loved continent that doesn't deserve to have Bellisseria parked off its southern coast. Why? Because they are polar opposites of each other. Sansara has and continues to produce creativity, while Bellesseria does not and gives nothing back, except L$ revenue for LL.
Bellesseria's close proximity to Sansara somehow cheapens the legacy of entire Sansara continent. Like an analogy of having a McDonalds built next to Stonehenge or other world heritage sites. I think Bellisseria should be entirely moved as far away from Sansara as possible, perhaps back to its original SSP location, or somewhere between Gaeta and Zindra.
The long awaited navigable sea channel that has been created between Sansara and Jeogoet is the only positive benefit from Bellisseria's creation in my opinion.