About what I was thinking, too. High risk, time, and fuel cost/very high reward when successful. Would suit the higher lvl players who get a bit bored and can handle the risk/reward level. Doesn't have to be very fancy (I think) and could build off of current DW with only a bit of tweaking for area/character selections. Could be very very involved if scrolls are anywhere or multiple steps are anywhere.... so might need to minimize the probability of having to jump 10 times to just get the location of a NPC you need to meet.