No offense taken. I like to leave theme open because I don't have a problem coming up with ideas, and prefer creative license, but if people want a tightly defined challenge suggest it.
Here's my take on it:
I'm currently happy without the ABC. I'm working on finishing Siege, I've been doing some work on a PW, I'm helping some other people on a project in NWN (teaching them how to use the toolset and code), I'm running a top end guild in WoW, I play still other games at times with friends, and I still have a relatively busy real life.
If I happened to just suddenly think of something I wanted to do in NWN really badly...I'd simply do it. I wouldn't wait for the ABC. And I seriously doubt I will think of something new I absolutely feel I want to work on.
What I find interesting about the idea of the ABC is precisely the limitations which are imposed. The time limit means you have to keep it reasonable in scope and you have to figure out what you can feasibly get done. And a theme actually IMPROVES creativity. Which is easier to think of something to actually write?
1. I want you to write an essay on politics, you have a month.
2. I want you to write an essay on feudal politics in Medieval Europe, you have a month.
For most people, #2 is far more likely to give them an idea because the scope is more narrowly defined. It means you can focus your thoughts and figure out a topic you want to write on.
Because of this, I think such a topic would draw more people in because of thinking "Huh, what would I even want to build?" they would think "Huh, a challenge to build something about <X>? That gives me an idea..."
And that doesn't stop you from leaving a wild card option in for people who want the freedom -- but providing some prompts will help a lot of people. Nor does the prompt even have to be a theme -- here's a bunch of example prompts:
- Build a module meant for level 40 characters
- Build a module meant for level 20 characters
- Build a module meant for level 1 characters
- Build a module meant to take you from level 1 to 10
- Build a module meant to take you from 20 to 40
- Build a module meant to go after the first NWN campaign
- Build a module meant to go after HotU
- Build a module where you character LOSES experience as you go through it for some reason
- Build a module where your character has anmesia
- Build a module based on stealth
- Build a module based on divine spellcasting
- Build a module based on arcane spellcasting
- Build a module based on physical prowess
- Build a module based on pirates
- Build a module based on undead
- Build a module based on Drow
- Build a module based on dragons
- Build a module based on political manuevering
- Build a module based on two countries at war
- Build a module based on a city under siege
- Build a module based on a town ABOUT to come under attack by something
- Build a module about exploring the planes
- Build a module based on a book/movie you like
- Build a module based on events that happen in a book/movie that are only mentioned in passing
- Build a module that has to be completed within one hour
- Build a module based on a murder mystery
- Build a module based around an adventuring party that you lead
- Build a module based on discovering secrets about some artifact
Etc. Those are some I came up with off the top of my head. And, personally, that's the main thing that would draw me back into the ABC -- because, as I said, I don't feel a need to do anything new due to my current projects but seeing what I could come up with within a month for a topic would be interesting.
Can even choose prompts based on what people think the Vault is lacking. Do we need more Shifter specific modules? Let's make that a prompt. Do we want more Ninjas? Sounds like a prompt. Do we want more modules that play after a current community module (for example, what might the Bounty Hunter from rogueknight333's Snow Hunt do after completing his mission)? Might be a good prompt.
Plenty of possibilities and I think that kind of stuff will draw people in more than just leaving it purely open ended (and again, can always include a "Just do whatever you want" option if people have something specific in mind already).