Re: T3 it would indeed be logical for atleast KL to move to T3. There are obviously synegies involved hence why they first moved to T2 to be with AF. Would it make real sense to move the entire alliance? I'm not sure.
U2 have stated that they would like to remain in T3 but are worried what the impact of AF's move will have on terminal/ramp capacity....particularly as they are expanding the number of based aircraft.