13 is a full season for them. it's not half a season. they'd like to try for more, but it depends on scheduling and if the network goes along with a longer season. and from what i heard, they were pushing for 18 eps. that's like saying other shows with 6 or 10 eps aren't 'full seasons'. they're just not 23 ep series, like some. more shows seem to be going with shorter seasons lately.

/pedantic