Just wanted to share my positive experience so far.
Staff on e621 is possibly the absolute best on any website I've ever dealt with. Tickets are dealt with swiftly, staff is responsive and friendly (and fair), and when I was banned for suspicion of being underage, I verified via e-mail and it took pretty much no time to get unbanned.
When I needed (and still need!) to upload several pieces of art from an artist's portfolio at once, without waiting a day or more for 10 post approvals, they generously helped me (twice!)
They're fair towards users, they're here for when they're needed and honestly I wish there was more credit given where its due for staff dealing with people who troll and post... unsavory comments or DM you asking you if you enjoy the idea of engaging in illegal activities.
Not all staff members are the same, and there is definitely some unsavory history in the past regarding some members of the staff team judging by other threads, but otherwise...
Nothing else to add. Thanks @spe, and other admins and janitors for helping around. :D