I think that with FAA, the answer to all such "how hard could it be" questions is that it's basically 1 guy running the site. He now has a very large database with millions of images in cloud storage (Amazon S3 I believe). It's not like SS, where there are dozens of engineers and technical people.
IMHO, FAA is reaching the end of the road with regard to what one guy can support, and it's looking pretty dated. Wouldn't be surprised if he sold it.