The more the merrier! There's still plenty of time to sign up to this pool for the Mitre Cup. Think of it as a bit of fun, as no doubt like me you've no idea about the relative strengths of the NZ club sides.
At the moment I plan on setting up CAW pools for:
Premiership
Challenge Cup
Champions Cup
Top14
Pro14
Autumn Internationals
6 Nations
They're all separate, so you can choose as many or as few competitions as you like.