LHI are the 200's breakfast. 100 can do it, but the 100's are kept for other reasons. They didn't want them deposited onto the local open market and get into the hands of APNG that was going to operate into Australia, they provided back up, that is when they had crew for them that is. Also the QF Dash sim is a non glass 100 for the fleet of glass 200's & 300's, so they needed some 100's in the fleet to justify the sim or,,,,, chop....... Of course, this is all just a rumor.
The 100's made QF link what it is today. Big move from the Short Boxes.