For me, we need to appoint a manager with some sort of track record that has a style and philosophy that fits the brief set by Gibson and given to Scott. A newbie would be a huge risk as there is no evidence to back up management style, newbies could be anything. Yes, they can work out, successful managers have to start somewhere, but more fail than make it. A newbie with pulling power like Bryan Robson would attract players on reputation, but without tactical nous and man management skills it can unravel quickly.
Scott will likely be the big influencer for Gibson. His vision needs to fit into recruitment strategy, but also retention, taking account of the squad we currently have. As said above, while the jigsaw analogy is a fair one, getting the balance right is no easy task.
Too experienced a coach and they can be set in their ways, tried and trusted styles that have been successful only work if the players at the club can adapt quickly. I would like to see someone who is early in their management career, with a decent grounding as a manager at a lower level, improved the team or teams he has been at, has drive and ambition to get to the top, but not someone who sees Boro as a mere stepping stone, someone who wants to hang around and be a part of any future success. Someone who has good man management skills and a vision that mirrors that of the clubs forward strategy. As for names, I really don’t have any, I will leave that to Scott and Gibson and place my trust that they get things right between them at the first time of asking.
Maybe what's happened is the Ameobi Experiment. We signed him and then tried to make him invisible to opposition players. Something went wrong with the experiment however, and whilst to anyone looking on we did indeed make him disappear, he is not actually invisible, but has in fact travelled through time to the year 1984. Or, he has a dicky knee. Could be either 🤷♂️