Saw this at washingtonpost.com:
After Five Years, BWI Refurbishment and Inconveniences End
I have just taken a trip out of BWI. I usually fly out of DCA/IAD, but I must admit, it was a much better experience than at IAD. The daily garage was a breeze, and yeah, the TSA lines are really long but they move much faster than any other airport I've ever been in. And no moon buggies! Upgrades on UA seem easier since the planes are not full of 1Ks.
The one thing that really keeps most Washingtonians like myself from using BWI on a regular basis is the lack of dedicated rail service right to the terminal. The current situation where you have to take Amtrak/MARC and then get on a shuttle (that seemingly takes forever to arrive) to the airport is a real pain, especially during peak times. And MARC doesn't run on the weekends, so you have to ride the more expensive Amtrak service.
In the article they mention cutting the proposed monorail--This seems very short sighted. At least with Dulles, you have a dedicated road to get the airport (and someday, the Metrorail). Unless you are driving at 6 in the morning, the trek up the BW parkway or 95 can vary wildly with travel times.