It'll make things easier for me...because I live in Flushing. But that AirTrain (if it gets built) will take people away from Manhattan, and dump them out at a new station that connects only to the (7) train (which is already overcrowded all day and all night), and to the Long Island Rail Road's Port Washington Branch, which runs barely every 30-45 minutes during peak hours, and once an hour at all other times. (And is also the only LIRR branch that's not connected to the rest of the LIRR network.)
This was Cuomo's pet project, and he's gone now, so perhaps it'll be scuttled. If they won't spend the money and the engineering prowess to either extend the subway direct to LaGuardia, or build an AirTrain that at least heads towards central/western Queens and Manhattan, I honestly feel that LaGuardia is currently better served with the "LaGuardia Link" Q70 Select Bus Service. It's a very frequent bus route, and runs essentially non-stop on the highway to/from the airport, dropping people off at one of two places: The Jackson Heights/Roosevelt Avenue subway complex, where you can connect to five different subway lines, and to Woodside, where you can catch the vast majority of LIRR trains to all points west and east.
And with the bus, you're paying the basic $2.75 fare, and then get a free transfer to the subway. AirTrain JFK currently charges $7.75 for the privilege of riding it, and you *don't* get a transfer.