If Lowe comes on board I can see him threaten Bob Bell's TD role.
Other than that I don't understand this ''too many designers'' argument.
Every team has a Team Principal - Brawn
Every team has a Technical Director who's responsibility is more on a higher strategic level rather than overseeing day-to-day design.
I'm sure all leading teams have a Head of Simulation responsible for the technologies used for smulation (WindTunnel, Simulator, CFD etc.) - Geoff Willis
All teams have a Chief Designer role leading the design project of car - Aldo Costa for the W04
All teams have a Head of aero responsible for the shape of the car -Elliott.
The fact that some of these guys had TD roles at other teams is not relevant as their role is different now.
Unless they let their egos get in the way, which would mean they're not doing the job according to their task description.
Edited by Timstr11, 22 January 2013 - 08:33.