Things have improved, but only marginally so in my opinion. My biggest beef with the park is their perceived mantra of "set it and forget it" - whereby they simply let nice things rot and deteriorate to the point of no return. This includes attractions, restaurants, themed lands, queues and restrooms.
Granted, DC Universe looks good for what it is, but you can already see the Six Flags treatment setting in. New paint isn't going to do the trick when you're simply adding a layer on top four existing layers of cruft and sadness. It's just not a good situation, and I can't understand why park management doesn't take the effort to change. They keep saying they will, but until I see sustained improvements, I'm always doubtful.
By the way - the restrooms are still terrible. The Full Throttle restaurant was the only saving grace.