Could I Have Done Better?
I probably could have raised awareness regarding some of the site's architecture. From the beginning, it seems the site was tasked with a massive set of requirements that were trying to be fulfilled in real/near real time which, in my opinion, was a huge red flag. However, I seriously doubt whether or not such advice would have made any difference.
The problem with this task is it was wrong-headed from the very start. That is, bad initial decisions were made regarding the single fed exchange. The fed never should have tried to create a single exchange for all the states that didn't want to create their own. Once it became obvious a lot of states were going to opt out of creating their own exchange, they should have figured out a way to incent most/all of those states to build their own. Granted, this might have higher initial costs but when this started we were in the midst of the worst-ever recession. Although I'm sure there would have still been a few hold-outs, the right financial incentives would have convinced most that the potential economic stimulus is more important than their principles.
I also agree with another post regarding why the government wanted this at all. The government should have told the insurance companies they need exchanges and, again, incented them to build them rather than a single, massive and failed fed site.