Since with big, in house, data we sometimes have to change the location of filegeodatabase, So with old projects, some of the database is lost in the process.
Like in Xtools, a centralize, easy to use, Change dataset is a plus. Ability to see at once which database link or individual item link is broken; Repair link for a database with all its dependency or for a specific item.
Haven’t check in Pro but a drawback of arcmap is not showing data missing link if inside a group. So also put a mark in front group if a link is missing inside will be appreciated.