Sanitised For Your Protection
I usually just sign up for betas when I run across them (unlike some people who actively look) and I almost always promptly forget about them until I get an email. I got an email from Mycosm,* which is, it seems, a business formulated almost entirely in response to corporate displeasure with certain aspects of Second Life. The things they state as "problems" are in fact
not problems at all, but let's look at their list:

“I couldn’t even work out how to move!”
Short answer: up arrow key makes you walk. Long answer: There's a big learning curve I have heard people talk about in Second Life, but have never noticed myself. However, assuming that there is something like that, I would've thought that the time spent learning to fit in and becoming a resident and not just a tourist would be fascinating and add lustre to the feeling one would have once having become acclimatised. Like, say, moving to another country. I hope the question-asker never needs to travel too far from home; most people, however, travel to new places for adventure and to learn and experience new things, i.e. fun.

“Why am I part of someone else’s world? I want my own world.”
Uh - if separation and control are your thing then one world encompassing the messiness and variety of human experimention, learning, taste, and so forth, is not for you.

“Why doesn’t it look as good as a game?”
Parts of SL DO, but because SL is built by users there's no consistent theme or quality level, and parts may not be to your taste. We have been given superb abilities in SL and have completely run amok :D in unexpected ways. We revel in our freedom - or if some don't it's because they don't understand how wonderful it is. LL gamely makes things work, even makes things better, when people wear 10,000 polygons on their heads, 1000 prim necklaces, and umpteen highly scripted attachments.

“There is nothing to do here.”
Wow, this is not something any artist, or creative individual, could possibly understand, but then, hey - this person couldn't figure out how to walk. Unimaginative.

“I don’t like meeting strangers, where are my real friends?"
AKA "I don't want to meet people from all around the world - I'd rather hang with my little clique and never have to learn anything new." Fearful and/or lazy.

I think a corporation wants total control, no learning curve, channeled experiences for visitors, separation - I would guess they'd be happy with this kind of thing, which is reminiscent of non-unified places like ActiveWorlds and others. In other words, it's reverting to an older paradigm and saying it's a Brand New! Improved! idea.

"We firmly believe in a clean, safe community."
We believe in a safe community, and that's why you need to be over 18 to legally access SL. The things people like to play around with are many and varied, and "clean" doesn't really stretch to cover them all, though, but go ahead and do what you want.

"For this reason we emphasize sharing Mycosm with friends instead of strangers."
There's that strange xenophobia - is it attempting to profit by building upon fear?

Well, it's good to have new worlds to explore and it isn't as though SL has no room for improvement - some things need to be overhauled completely, like the way newbies look and the default walk animation. Maybe there could be a kind of premium entrance that involves extra steps from choosing a shape and skin (don't ask me how that could be done equitably as I don't know) to an AO, clothing and accessories.

*10 demerits for naming it "My-" something.