I miss the old interface.
It was easy to handle the flags on the old interface -- the decisions were frequently clear-cut, and sometimes if someone's reputation looked low enough that they're very new here, a corrective paragraph was usually easy to write. Silly comment flamefests were easy to deal with.
It felt like an excellent way to help improve the site when my brain was no longer prepared for actually answering questions. (And also guaranteed that spam posts never survived more than ten minutes after being flagged.)
With the new interface, I don't feel like I have the tools to address the problems being flagged: I can't delete not an answer answers. I have no idea how to address Possible vandalism of own posts; multiple deletions in a short time;. Some of these problems feel 'out of my pay grade' (I'm only 17k).
The tools available on the page seem mismatched -- the Flag button feels like the dead-wrong approach for low quality question. Vote to close would be more useful. Add comment would be more useful.
And, I have no data to back up this concern, but how much of "the community will take care of comments flagged abusive / obsolete / .." or "the community will take care of questions / answers marked as spam" was due to 10k+ users on the old page?
Consider an abusive comment on a post that receives so few weekly views that a flag raised by an insulted newbie may expire before a second person stumbles on the abusive comment and casts a vote -- an offensive comment might remain to insult future viewers, never gaining enough visibility to be pruned. Under the old 10K+ flag page, it would be visible to many members of the community who're invested in the success of the community.
The new page might be more useful to the ♦-sheriffs in town, but I just don't see myself using this new page as often as I used the old page.