I wasn't limiting the discussion to NZ. I was discussing what I think every gun owners requirements should be regardless of where they live. Mentally ill is a generic term, it would require consultation and some illnesses may be excluded from it potentially.
If you are a sports person, then you should already be meeting 99% of those suggestions. The police should be the most well-armed people in New Zealand.
I feel this should read The Police should be the most appropriately armed people in New Zealand.