First of all Welcome PMan74 to FT.
Secondly I agree with you and IceTrojan. If I want to go to New York City, my routing would be going to NYC. I don't care which airport and have plenty of times flown into one and left through another one.
There are plenty of multiple airport areas. Kepp it open where exactly to fly to. Everybody knows the different airports in the area.
But I have to agree that HOU doen't really help as a description.