Thanks for your reply, Ipstenu. Yes, I've filed a request using that form many times over several weeks. I've never received any response.
The site was indeed attacked and used for phishing, several months ago, so I understand why they flagged it. I just don't understand why they have failed to respond to my requests now that it's fixed.
Does anyone have any idea what Google's typical response is to a request for reconsideration via that form? Their documentation is quite vague on this point.