Having put much though into this, I think it will be simplest to make our next challenge a Ttrak module.
Recognizing that not everyone will have an interest in this, let me parse through how I arrived at this.
1) It's pretty straightforward. The standards are out there, and as
@davefoxx notes, there are several of us that have already started moving in that direction.
2) For those of us that are stagnant in our modeling efforts, or looking for a jump start, Ttrak does seem to offer a "bite size" way to exercise all the muscles for trackwork, wiring, scenery, and a little carpentry, with rooms for whatever structures or other accessories that might appeal to you.
3) While it is N scale specific, with a base module size of roughly 8x12", there's no reason modelers in other scales couldn't dabble with the end result being something that can be displayed on a shelf, or even sold.
4) It does promote the social/community aspect of both the hobby and the Railwire. Since we have pockets of members in various regions around the country (and world!) wouldn't it be kewl to have an event like "RailBQ" (hosted in this region by the Conrail Historical Society) where a bunch of us can get together and quickly whip up an operable layout on the picnic tables... Note, I just looked up the Rail BQ, and the CRHS has made that a closed, members only event, with a work session planned on their caboose stored in Landisville, PA. Sounds like there won't be time for a Ttrak set up or softball this year! So maybe we focus on some other gathering, or do one of our own.
Given the simplicity of a Ttrak module, and relatively low cost (assuming you don't already have a box of stuff on hand you can use), I don't see this being more than a 90 day challenge.
So with those things in mind, I'll post the challenge guidelines under a separate thread. I'm also still cultivating some ideas around a more specific "micro layout" challenge, because that's something I'd like to take on personally, and I love the creativity that comes from this group when there's a high, small diameter, and flaming hoop to jump through! Stay tuned for that in the coming months, too.
As I've noted previously, if this challenge isn't your cup of tea, no sweat. If there's something you'd like to see the members take on, big or small, standard or narrow, steam or diesel, what have you, sketch out your idea and let's run it up the flagpole.
Lee