I like the idea of the new breed of merino wool products, primarily the base layers. However the cost is still to high for me to pull the trigger on it; I'll likely be staying with mostly synthetics for the foreseeable future.

Regarding wool & fire, one place I've been thinking the fire-resistant properties of wool would really shine is in a simple pair of liner gloves. I've only recently started doing a little winter camping and noticed last year at one camp that I was melting little holes in the fingers of my liners by tending to the fire. Obviously this wasn't an injury concern, but I started thinking a pair of wool liners might be more durable in this respect.