There is a Bavaro Digital FB page that has Bavaro/Punta Cana "news" and discussion. But, the last time I looked at it, it had mostly videos of people running the traffic light(s). Pretty worthless. There were probably other topics too, and grisly photos. I don't have the link any more but someone might be able to get it to you.
Also, I see Dominican Today has added a button that says Punta Cana news.
And there is this:
http://bavaronews.com/semanal/
These are not forums. So, maybe not of interest.
DR1 is still the best - seems any time someone posts, there are good answers.