In reply to iamaclimber:
Consider taking a plastic pot for 'cosy cooking', or just for keeping, say, pasta/rice ready whilst you cook the sauce. Depends how adept you are at one-pot cooking; that can always be tested at home.
Melting snow with a small pot can be a challenge; the useful volume of the Titan kettle is about 850ml. You'll be feeding snow into it constantly to get a reasonable volume of water (depending on how fresh/compacted the snow is).
Does the WP2 pack into the kettle? Don't know; I have the kettle, but not the WP2. Ask MSR...? Their website isn't very helpful, is it 'fits in a 1 liter pot'; yeah, but what dimensions?
I have a Karrimor Alpine Stove (aka a Fire Maple FM-117). That certainly packs into the Titan kettle. £23 from SportsDirect...