While I'm not sure about Director of Football, which really is a transfer and contract management, and relationship role first and foremost; I'd like to see Liam Palmer in an executive role in some capacity:
A player that had been in the youth system and U23s, has weathered a storm of ownership, managerial, and league changes, and even some (limited) international experience.
Oh the broader subject of coaching and management, I think ownership moves on from managers far too quickly these days in sport in general. No time to build a culture, no time to build a system, no time to properly recruit.
If Röhl actually intends to commit, I'd love a contract with a compensation clause that makes it very difficult for ownership to move on from in less than five years. Similarly, if Röhl jumps ship (I fully expect him to leverage moderate success in the coming season into a move back to Germany), I for one would really like to see someone like Carlos return and be given control, time, and opportunity. Six years. Control to imprint a culture, bring in players, and even get the youth squads aligned and on board tactically and technically.
I want a manager with some personality, flair, and vision to have time to build something. Even if it means a few difficult seasons. Not just another nobody trying to get the team pressing and playing as if we're Manchester City or Liverpool - we're not. And won't be.
Way too many managers trying to manage as if they have Pep or Klopp's players and payroll to work with, and trying to play PL and CL football with League One and Championship players and facilities.