I would have thought legal/financial advice wise, not a bunch of cyclist's advice.... but... since you ask...my immediate thoughts...
1. Do you need to consider inheritance tax implications? No IHT between husband/wife, but, if (sadly) wife were to die there may be IHT if/when she leaves it all to kids
2. Do you want/need to protect against (possible) events after your death? one example wife gets new partner and/or remarries, then, leaves it all to new partner, who cuts out your children, and/or spends it all
I doubt it is possible to cover every scenario, but, I would think, professional advice wise.