It should be kept in mind that these programs are made for the general viewing audience, which comes as more of a treat to those interested in the period, uniforms, what have you. The length of the program is also something to be considered. Though this was a 2 hour "special" most of the History Channel's programs are only an hour long, which when you exclude the commercials comes out to about 40-45 minutes of actual program time.
I liked the look of the reenactors for the most part with the uniforms and period clothing looking very good. A pat on the back also has to be given for some of the CGI done for the program. The History Channel website has a few short behind the scenes videos that show a small number of reenactors turned into several hundred, while the period look of Fort McHenry and the White House were fairly well done.
Seeing the variety of uniforms from the period I'm resisting the urge to start a War of 1812 one-off figure, who knows.~Gary