Stu - That year we did a mountain of Italian pork salami, we also did a bunch of goat sausage as one of the guys had been up north shooting wild goats. We didn't make loads, but I thought they were the best sausage on the day. Opinions varied, some people didn't like them, but I though they were great. As others have said, wild goat is pretty lean, so buy some pork fat or belly and mince it in or it'll be pretty dry. Punkin's tip of soaking dried fruit is a good one, and if you don't want to use alcohol (why not?) then you can use apple juice. You could always add a bit of wine and some rusk to keep the moisture in.
Anyway, I highly recommend just doing a goat sausage, it won't taste too gamey.