When we talk about making your estate settlement simple, avoiding probate, avoiding Succession, avoiding legal expense when you die, or avoiding lengthy court delays, we are generally talking about scenarios which require that the parties involved be at least minimally cooperative with one another.
But when the heirs cannot stand one another, or they want to contest everything, all bets are off. You can rest assured that the estate settlement matter will likely be prolonged for years, and estate assets will be depleted due to legal expenses.
If the deceased had a last will and testament, and the heirs want to argue about the validity of the Will, or whether the deceased had the necessary capacity to make a Will, or how the assets were managed after the person died, or disagree on what assets existed when the person died, there will be Succession litigation that will go one for what seems like forever, and will drain the resources of the estate and the heirs.
If someone had set a trust for probate avoidance purposes, and the beneficiaries and trustees of the trust are dead-set on arguing, there will likely be trust litigation involving the same issues described in the previous paragraph.
Most of the estate planning opportunities that you have to make things easier for your family require both you putting the correct estate legal program in place, and also the heirs or beneficiaries being at least minimally cooperative with one another.
There is no legal program in the world that can make all estate matters simple when all of the parties that are involved cannot stand one another.