Any chance of adding in the Aether when it's released for SMP? I got into the dev team for a bit with theory, while we were adding a new title screen they could use, and it's pretty awesome. (I realize this would require a lot of work, because they'll have to use modloaderMP, but it IS possible to get that working with bukkit)
Aside from that, here's your answers:
1.) What kind of GAMEPLAY would you like to see in the world? A purely creative type, with HUGELY abundant resources and stunted monsters? A survival type, where resources are more scarce, and we are forced to work together to survive? A normal, vanilla-esque type, with equal challenge vs. resources? Or another type?
Personally, I prefer a purely creative world, where creepers might be able to hurt you, but they can't break blocks, and fire doesn't destroy, etc. On top of that, I love being able to spawn stuff and build, etc. That said, I also like survival worlds where spawning is highly limited, because there is inherently more power to something you built in those, because you put hard work, sweat, and determination into it. For this server, I would much prefer survival, especially if the Aether could be thrown in when it comes out.
2.) What type of GEOLOGY would you like most? Vast deserts? Floating islands? A waterworld, full of oceans and small islands? A healthy mix? Or other?
I've always loved strange, alien geology, but through myriad experimentation, I've come to realize that it just makes it tougher to build. I'd much rather simply have a basic world with a few tweaks for a bit more mountains and a bit deeper oceans, than an alien world suited more for exploring than building.
3.) Would you like PvP to be permanently enabled? If yes, would you prefer us to be at war, rather than cooperative? (Note: Server will probably only allow approx. 10-15 people on at once before lag gets bad).
Personally, I don't like the idea of PvP. I don't like the thought of someone coming up behind me and ganking me to steal the diamonds I just mined. I get enough of that in EVE Online, thank you very much. On top of that, war is even worse, because it encourages destructive behavior, and I much prefer to build.
4.) What type of abilities would you like us to give you? Do you want things to be more lenient, where players can teleport or fly or use TNT etc., or are you worried about griefing/imbalance, and would rather the restrictions to be somewhat tighter (to avoid possible problems)?
Some things I would like would be the teleportation features in Essentials, with the normal /tp command limited to ops. I'd also like the ability to do stuff like make broken glass drop glass blocks, and stairs drop stairs.
5.) Will you want a hosted version of the known map to reference? (Note: may strain the server a little).
That would be nice, but since you're trending toward PvP, it gives an advantage to players who reference the map often, as opposed to those who don't.
6.) Will you want the world to be pristine & untouched, or will you want me to hide a bunch of treasures, dungeons, secrets, and mazes etc. inside it?
Secrets, definitely. That shit is awesome to find.
Also, I would like to note that I am currently a mod on a server known as bitmissile (search East Coast Minecraft Server in google and you'll find a ton of results for it), and that I currently have responsibilities there. However, if this server gets up and running, and I like it, I can certainly switch over, or pool my time between the two. I tend to make farms and shit, so I'll probably be spending a good portion of my time making massive farms to supply my team. Nothing quite beats an underground tree farm that yields exactly 550 blocks of wood when harvested at full capacity. (That is blocks of wood, not planks. Meaning you get 2,200 planks, or 8,800 sticks, or 4,400 tools (assuming just supplying the handle), or 35,200 torches (assuming just supplying the wood, not the coal/charcoal))
Oh, and did I mention I'm good with redstone? Give me some bricks, redstone, and pistons, and I'll have you digging through the wall to get to our base, because you aren't willing to break the gate down. Actually, that brings up a question. Venetia, would you be willing to install a plugin that makes it so pistons can push obsidian? It makes things so much more fun. And that reminds me. Pistons + Me + War = all sorts of killer traps, like lava above the gate, to be deployed at the flip of a switch. Though, to be fair, the cleanup on that one is a bitch.