I was discussing this with someone else earlier....this new Fox president is from FX. He has had tons of success with putting on FX's shows in the off
months...nip/tuck, rescue me all started in summer months. They built an audience.
I think the idea of putting on a shortened season of AD on in summer to allow people to find the show and watch it without worrying about competing shows will increase the show's fan base exponentially.
Fox has actually done this many times in the past...the OC, and more famously American Idol all started as summer shows that ended up being huge.
The OC in fact had a summer season, but got so huge, that they started up a new/continuation of the summer season in the Fall season continuing what they built in summer.
I for one think thats a perfect way to get this show some more exposure.