Does it need to? It's for hackers, not for every user. If you're bored and feel like hacking on something, this might interest you. If it doesn't, Mr. Ludovic is not trying to force you to use it.
For me, some of its features, specially non-privileged user package management, are interesting. I'm not so much interested in the distribution at the moment, more in the package manager. I imagine there aren't many supported packages yet, so it's a matter of writing scripts... eventually it can become a distribution. Not for everyone.
But I still see no problem in more package managers being out there - any one has a problem with yum / apt being two different package managers? Why is yet another package manager is a bad thing?
I principle you are right. However in practice there is a sane point where there are so many competing solutions that you have to question why people don't spend their time improving existing solutions instead of adding to the fragmentation.
I highly recommend reading over some of the Nix papers -- what the author is doing is totally divergent from nearly every other package manager in a way that's either insane or brilliant (I don't personally know enough to judge). I saw his talk at a software upgrades workshop, and it was pretty impressive.
Sometimes you can't just improve an existing solution. It may be fundamentally different from what you intend to do (both technically and philosophically).
For me, some of its features, specially non-privileged user package management, are interesting. I'm not so much interested in the distribution at the moment, more in the package manager. I imagine there aren't many supported packages yet, so it's a matter of writing scripts... eventually it can become a distribution. Not for everyone.
But I still see no problem in more package managers being out there - any one has a problem with yum / apt being two different package managers? Why is yet another package manager is a bad thing?