Hi - I help run the site, so I can probably answer a few things, or at least explain the general philosophy behind why some things are the way they are (or at least, what we are aiming to do).
Our overall goal is for people to have fun. This isn't an excuse for people to just run roughshod over their fellow players, of course, but we try and keep it in mind (because if we're not having fun, then why are we doing this again?).
Level progression is intended to start quick, and taper off - the idea here is that new players can catch up sufficiently to take part in plots, roleplay, and pretty much any other activities, but the longer term veteran characters still have something to look forward to.
As for Half-Dragons and other unusual races, we generally try to balance allowing people to play what they want (within things that are possible in the setting) with the disruptions those would cause for others. Things like tieflings or half-dragons we figure would get weird looks, and might not be liked, but the primary city (Arabel) is noted as valuing coin more than unsuual origin in some of the old source material, so we allow it. Something like a half-fiend would be allowed, but would need to use magic to disguise their full/true nature, et cetera. Ultimately it's a balance, and one that we're tinkering with as we go.
Regarding forum registration, I'll see about tweaking the settings to allow some of the public information forums to be viewed without having registered.
As for the server layout, it did originate on a center-spoke design, although there are a number of interconnects that have been added. Many are out of the way though (which is mostly a factor of the terrain of the setting in many cases), and most players tend to either use transportation magic, or hire some of the caravans at the major towns to move around.
As for areas, we do have a number of things in the works, and are still adding things (if a bit more slowly than I'd like). I recently upgraded the machine the server runs on, so we can add a lot more stuff. One thing we definitely have in the works are more higher-level dungeons to challenge players.
Anyway, if you do feel like taking a look, feel free to say hi, if I don't welcome you first. '>