I was fine chatting HSR, but I know some people on here like to split threads like no one's business so I didn't want to offend.Didn't Rybak get his start before he was mayor as an organizer against the airport expansion? For better or worse airport noise is always going to be on his mind.
At least at MSP, I disagree. MSP's passenger/operation data used to list further back than 2008 (I did a study on this a while back, but can't find the data on the website anymore to validate, but still have my spreadsheet). In 2008, there were 226k major operations and 175k regional operations. In 2012, those numbers are 184k and 203k, respectively. In 2002, the major:regional ratio was 346k to 73k (you'll have to trust me). I remember doing an airline comparison and Delta and their subsidiaries and they are majorly to blame for the shift in shares since they took over from Northwest.See my post above for a bit of information on RNAV.
Also, its worth noting that the industry trend is currently moving towards larger planes flying with less frequency. Small regional jets are dinosaurs that the airlines can't get rid of fast enough. Based on this, and with the trend towards newer, quieter planes, it's entirely possible that on the whole, an airport handling more people could have fewer and quieter landings and takeoffs.
I'm not sure on Delta's future plans or any of the other airlines based out of MSP - I'm sure the smaller ones will start to operate longer distances and bigger planes as they grow, but I would hardly say the trend has been toward major flights favored over regional ones.