This is great. Good luck. You may have to concentrate on 3 or 4 airlines that you can get info for. The toughest info is the top tier as there are few fliers on some of the smaller carriers that make that tier and fewer yet that appear on Flyer Talk. The published info is not always as detailed as the mailings one gets. The Super Elite info on Air Canada is published nowhere else but contains great info about "other benefits". The great thing about doing the chart is that people come out of the woodwork to provide info so you can update/revise.