EDIT: I guess what I'd really hope to have seen (not being a US citizen) is some petitions to get the laws/system changed rather than looking for someone to blame.
- The US is a democracy. Our government, elected, appointed, or career civil servants, is accountable to the people.
- The position of prosecutor has great power, and we all know that that requires great responsibility. Prosecutors can destroy reputations, livelihoods, lives, families, and more. Choosing on whom to bring the full strength of the US government to bear, and how much of that strength to loose at a particular target, is part of the critical judgment required for the position. Proper prosecutorial discretion has been shown sorely lacking in this (and other) protest-oriented hacking incidents.
I'll be happy to let Otiz, Haymann, and Garland speak for themselves to let us know just how badly they feel. To date, I've seen no word from any of them.
Speaking to your edit: there is a petition to change elements of the CFAA that the EFF has identified as particularly problematic:
https://petitions.whitehouse.gov/petition/reform-computer-fr...
https://www.eff.org/deeplinks/2013/01/aaron-swartz-fix-draco...
If a federal prosecutor had ever in history allowed that consideration ("he feels bad enough as it is") to temper his zealous persecution of innocent people, then we might consider similar leniency for him. Since it has never happened, we don't need to worry about it.
Nothing that I have seen suggests that he feels badly at all.
Swartz’s attorney Elliot Peters accused Heymann of aggressively pursuing Swartz because the case “"was going to receive press and he was going to be a tough guy and read his name in the newspaper."
There are attorneys, some of them prosecutors, that get a kick out of pulling wings off of flies.
Unfortunately I have a feeling that the Obama administration will respond with something to the effect of "no comment."
Granted it doesn't happen that way often, but this is an opportunity to do so. The laws should be changed as well, but that doesn't absolve an individual who acted irresponsibly for his own gain