Does the scrim server sit unused but available during the week? Right now it appears to default to Dustbowl after sitting inactive...is it possible that the Walkway (training map) be set as the default? I think it would be a good use of the alternate server which mostly sits inactive during the week.

The server normally has a password set on it during non-scrim times - not to prevent regs/stnoers from getting on, but to encourage people to play on the main server. I think this sounds like a pretty good idea and it shouldn't be too hard to make it happen.

Then again, the map is mainly geared toward single-player training. What benefit would being on the scrim server give over playing on a local server?

Mainly because I don't know how to set up a local server. :)

Also it could be fun to "train" in a group.

You mean "Create Server"?

Isn't that like right under "Find Server"?