I just saw the premiere episodes of the show and all I can say is...
Really?!?! THAT'S the big affront to the fans of the original series that's raping their childhood? THAT'S what everyone's up in arms about? I mean, the "it's not for me" comments I can see but the fact that fans are that upset over this? REALLY?!?! Sure, it's not as good as the original show (which I'll get into later), but it's exactly what I expected it to be. A cartoon made 10+ years after the original by a new team that didn't work on the original show, but were clearly fans of it. Just...wow...the reaction, or rather over reaction is obnoxious and drama queeny. The anime and TV special are faaaaaaaaar worse than this.
That isn't to say that there aren't things I'd have to get used to. There are changes in style and tone, but nothing drastically like the fans of Spectacular Spider-Man got ticked off at Ultimate Spider-Man about. Nothing near as painful as what happened with George of the Jungle 2k7 or Gadget Boy and Heather (Zowzwers Bowzers indeed!) I mean, it's okay, it's not the love at first sight I had for some of the other CN originals of late, but it's far from the garbage everyone says it is. I'd say it needs work and in time it may just be something almost as good as the original's window of being good, but nothing that turned me off vehemently. Heck, the last season of Johnny Bravo where Van Partible came back wasn't as good as the first season, but that's because 2 of their writers went onto other projects.
As for comparison to the original show, PPG was a very special show when it first came out. It was a super hero satire made out of a student film where the satire was they were little girls who were super heroes. And yes, the series pretty much grew to be that special type of parody that fades into becoming what they're making fun of. This show lacks that specifically, but I don't see that being an issue. We've got comics about heavy set women as superheroes that aren't jokes. Anyone can be a superhero and the boundaries have been broken down, especially when it comes to girls. While I did initially find the concept of bringing back a series that frankly finished itself off a good season before it ended (and I'll go into that in detail) a bit unnecessary, I get why they'd want a show geared to little girls to come back. Especially since it was revealed CN hates cartoons that get female viewers, and female cartoon viewers weren't very happy about knowing that. PPG was never meant to be a girl's show, it just became one. Now it's speaking to girls a little more directly, turning the show more into an intentional alternative to boy's action shows rather than the accidental one the original became. And remember, the PPG merchandise was totally for girls, almost making it the antithesis of what the show was about.
As for direct comparison to the original show, I wasn't pulling my hair out of my head the way the fandom did. Now, I really like PPG, though I'm more of a Cow and Chicken, KND, Sheep in the Big City classic CN fan. I feel the show was only truly great about seasons 2-4 including. Season 1 was pretty much establishing the show and was alright, season 5 was jumping the shark territory, but if it ended with that dumb Rock Opera episode it would have been fine. Season 6 (minus that one episode about the Gangrene Gang)was pure garbage. All the jokes were slow burns... Chris Reccardi ruined the show. And as bad as the fan reaction to the new series is, it's not nearly as angering as "Toast of the Town" was to me. So it's not quite as good as the better episodes of the original series, but it's freakin' gold compared to "The Steamy Puff Girls" or the one where they refused to wear sunscreen. Mizzin in Action? Feh! I think this show does have potential to grow once the new writers find their voice and have it sync up with what made the old series great. So overall, not nearly what they did with the Teen Titans. Not even close.