I assume the idea is to use as much as is there already, the checkin area is perfectly adequate for the time being-I think what is needed is more IDL and gates-and to 'redevelope' the terminal front airside should do that plus give up space for retail as well.
On another note I was very sceptical about the changes to the drop off arrangements outside but they seem to be working well and the new Spar in the terminal is just great-hot bacon rolls at 0300!