that would be an interesting spin on this mod: increase the frequency of terror missions, but make them a little bit easier (less aliens, for example). nerf the interceptor's weapons, to make it almost impossible to shoot down anything but small and perhaps medium scouts. the interceptors would mainly be useful for shadowing UFOs until they land, then send a skyranger.
maybe even turn the interceptors into three-man transporters with only one weapon port, and change the skyranger into a really slow helicopter-transporter? you would be very limited for anything further away, like landed UFOs, but could still send a larger squad to terror missions (they don't expire as long as they are targeted by a transport).