Since payment channels are completely different in the way the infrastructure works, and since they will experience their own set of challenges and issues, I think it would be great to have a forum dedicated to supporting them. One implementation is already working and we will soon have two more ready to go that will make all of them compatible.
Right now there is no forum that suits for talking about payment channels, and it will be a mix of Bitcoin main forum, dev talk and maybe even the altcoin section or off topic section.
Please consider giving a forum to testing what is arguably the most anticipated feature of Bitcoin ever!
I also think it is a great idea, but wouldn’t it be more precise to say that you request a new board? When I read the title I thought you were requesting a complete new forum, apart from this one and the other one in project.