Big Buck, I tend to agree with your assessment.
Virginia Tech will most likely have a good football team as long as Beamer is there. Blacksburg is a good vacation spot if you like the mountains, but offers little in other areas.
Boston College is an up and coming football program in the NorthEast. Boston is one of the oldest areas in America historically and offers an excellent location to start a vacation for the entire NorthEast section of the U.S.
It is a hotbed for the Media and would really open up the NorthEast section for better support of the ACC. It would give the ACC a better recruiting base for the NorthEast high schools, and the sportswriters in that area would become more familiar with the ACC and give us better voting on the strength of our teams.
I can't imagine a better school to add to the ACC at this time than Boston College. I believe it would help the ACC's image for the NorthEast area more than it would help Boston College.
Although Syracuse is not one of my favorites to join the ACC, "what good can come out of New York?", I think it would be a good addition from the media perspective and for recruiting in that area.
When you are saddled with stricter recruiting guides, such as the ACC, it is wise to broaden your recruiting area to more of the country.
To me, Miami is the least important of the teams being considered. Their recruiting and schooling methods are far different from the rest of the ACC. I don't think Miami offers much to the ACC community.