Tiger's a smart guy, and I think he's going to try his hand at GCA in the best way he can. Which for now means 1) being a full-time record-chasing golfing marvel; 2) selling Buicks and credit cards in his off-time; 3) skiing and scuba-ing; 4) "designing" golf courses.
When he touches down on-site he'll already have reviewed a 50- page executive summary of the project, including the completed routing. He will then spend time in the field and office going over the strategy of each hole -- bunker here, slope of green there, etc. 30 minutes each hole, tops.
Wheels up and come back for the grand opening -- which, if the owner wants him there, must be arranged around #1-3 above.
This is the reality of his life today. Guess he could have waited until he "retired" to participate more fully, but why? If I were in his shoes, I wouldn't. He's probably planning on surrounding himself with whoever he trusts and thinks is the best and will let 'er fly. Good luck I say.