I'm not anything worth a say but everyone's opinions count right? Right?
I'm completely with JayJay on this one, in the little time I've played the server, maybe a few months, I've come to notice that I can't go anywhere without stepping into someone's tracks of where they've been already, be it mining tunnels, abandoned/griefed housing, or just plain laziness of unfinished work, most of which it is safe to say are created by people who are now inactive.
Aside from the fact that what I mentioned above I personally think is getting pretty out of hand I completely agree with Jayjay on the point that it would give town mayors/TA's a completely new perspective on the whole environment, take my town for instance; Seaside.  A few times in our party chat have we had a conversation about the history of the town, and how it started on a little island no bigger than 25x25blocks wide. It makes me wonder why they didn't start it elsewhere.
It would give not only current mayor's the chance to reposition and potentially re-design their whole entire town, it would also give new, prospective town mayor's who've yet to create one but are thinking of creating one a much better chance at gaining an equally as good a chance to get decent land.

Leading on from that with the all the skills being reset, it would give everyone, and I do mean everyone a level playing field, those who wished they were on the leaderboards but aren't because of the ridiculously high levels some people have, it would also give older members a chance to thrive once more, think of it as bragging rights, you weren't only one of the top members in X amount of skills last time but you are now also. I know I for thrive at the sight of a reset because I find being stripped completely back to nothing and let loose almost invigorating, instead of sitting in my own wealth/comfort constantly.

It would also bring new opportunities to bind those friendship groups so to speak closer than they are already, and those who do feel like they could get involved more, involved, because of the fact that everyone is on a completely level playing field.
It would only be your own fault of you fell behind because everyone starts with the exact same, nothing.

For now that is my brief, but hopefully comprehensive summary of why I agree with JayJay on a complete world reset. I will no doubt add more if needs be.