Biopilot saved Stein to Mithias.
Nobody is going to tell you ahead of time about a trap. traps are a surprise. you find out about them when someone posts that you walked into one.
I'm waiting 3 weeks to see if what you posted would work or not. maybe it would. It's not my say.
HGW is something that is going to kill everyone you know and love. Don't know if Martin knows that or not. I would think he wouldn't hesitate to stop it from being created if he had that power. Maybe he doesn't anymore, or never really did for some reason. These are the kinds of things you need to discuss one on one to be sure you each understand it all beforehand. Based on what I know, I have a big feeling Martin would meet adversity in his attempts, but I do expect him to try to save his brother.

And another thing, I think Stein is actually there to stop Terebithia from making HGW.... or blowing up the world or something... He said he could calm her down, so that's more why Mithias brought him there. Of course, Mithias got the short end of the stick on that deal. 

Plus also, if our characters are in trouble, then other players get the chance to step in and help do stuff.