It was such a radical idea after twenty years without one. There had been rumors that it would be reinstated during the Dark Lord's lifetime, but nothing ever came of them. Most of the esteemed members of the Wizengamot at the time of the end of the last war were murdered or disappeared completely from public life. The Dark Lord didn't want anyone to have the least bit of power unless he gave it to them. He was the one who appointed his trusted Death Eaters to various positions in the government. A collective body of witches and wizards making decisions without him was simply unacceptable.