Daily Telegraph - How to make your will bullet-proof

I am writing two guides for The Daily Telegraph's advice section.
Details below. Would be good to get comments from financial advisers/lawyers/legal experts/ tax bods on the subjects and themes below...

1. How to make your will bullet-proof
- Remembering this is for a Telegraph audience (so very sophisticated and concerned with passing on wealth in the way they want)
- how to stop a child's ex-partner claiming a share
- wayward grandchildren who might splurge an inheritance etc
- stopping your ex-partner trying to take a piece

2. How to contest a will
- The flipside to the above
- What to do if a parent has cut you out of a will, or given a bigger share to a sibling
- How to get what you deserve from an ex-partner