A number of people were telling me that the name Dragon's Passage wasn't compelling to them. This was a bit of a problem since I was rather fond of the name. However one person whom I really respect was insistent that I find a new name and that I do it quickly. So I did.
I spent some time seriously thinking about it and came to the name Dragon's Wake. I found I actually like the name Dragon's Wake even better than Dragon's Passage.
Dragon's Passage is a name with several meanings that are relevant to the game but they only resonate weakly. A Dragon's Passage most obviously refers to the passages and caves that the dragon character(s) live in. It can also refer to the act of a dragon passing by.
It also can be stretched to mean the action of a dragon passing on (i.e. dying). All of these are relevant to the story and/or gameplay, but the most relevant ones (passing by and death) are kind of oblique.
Dragon's Wake also has a couple of meanings and most of them are rather similar to Dragon's Passage. A wake is the immediate trail created by something as it moves (think of the waves a boat makes as it moves through the water). In most fantasy fiction the wake of a dragon tends to refer burned towns and dead bodies.
However, a wake can also refer to the funeral ceremony. A Dragon's Wake would mean mourning for the death of a dragon. The meanings are similar to Dragon's Passage, but I think they strike the imagination much more sharply.