La Guardia is gimped by stupid rules about travel distance. I'm sure these rules made sense years and years ago when planes that could travel long distances were very loud, but by now, the airport has been there longer than most residents and planes are significantly quieter.
From a net utility standpoint, NYC should just pay for "port packages" for nearby houses, add the cost to landing fees, and remove source/destination restrictions on La Guardia.
La Guardia doesn't operate in a vacuum. It's too small for long range aircraft and increased traffic at LGA would create problems for JFK and EWR. Besides, the runways at LGA are much shorter than those at JFK, EWR, and extending the runways at any of those three is problematic. Even SWF has longer runways.
From a net utility standpoint, NYC should just pay for "port packages" for nearby houses, add the cost to landing fees, and remove source/destination restrictions on La Guardia.