-You can sneak without any points into sneak. Guerrilla doesn't need a sneak lock, although it might discourage people from taking it, which would be a good thing.
"Ping and Chat should probably be disabled in "nobody" mode (pure SP), re-enabled upon allowing other players. I keep confusing chat with the combat log"
- I'm going to disagree, on the principle of "if it ain't broke...". It doesn't hurt anyone to have these things exist in SP, and adding unnecessary code could break them in the actual mode they're used in.