George or Barry ought to run human relations. The directive would be to get new blood into the company. Sega used to be a breeding ground for talent; now it's a barren tomb. Convincing new blood to come into the company from the top computer and art schools in NY, London and Tokyo with higher pay, more creative freedom and strong incentives for winning awards. Loosen up deadlines. If a game needs to be delayed, it's delayed. That only serves to build hype, anyway.
I'd give Joe digital operations. Again, beef it up. Creative Assembly Australia shouldn't have been axed; they should have been given Aladdin next. A studio or two dedicated to "re-imaginings" of classic Sega games (a completely revamped Daytona for instance), ports of DC/Saturn games and "art-house" digital games - the sort of thing like Rez or Segaga that just didn't have a market in 2001. These would be your "Sega DNA" studios.
I'd hand Sonic Team over to Sharky. I imagine he would let them take a break from Sonic long enough to freshen up and get it right and he would let them make new and exciting IP.
I would let Team Andromeda build a new Away Team. They would have a mandate to design game engines to be licensed out to the rest of the industry, to pioneer new tech within Sega (how to handle 3-D gaming, Occulus Rift, holograms) etc. It would be his job to make sure Sega was doing shit first. It'd be a money pit.
I would give advertising to Kogen. It'd be fresh, offensive and memorable. Sega would definitely have a reputation for being mavericky with him at the helm. He would likewise be the spokesman for Sega West at things like E3. Reggie became an icon for swearing once in a presentation. Imagine the press if Kogen turned the Sega booth into a bordello. Also, bring back the Sega scream.
I would give AM-2 to MadeMan. No explanation needed.
I would let Aki save my version of Sega from bankruptcy. Perhaps the hardest challenge of all.