"Discuss any topics in this open forum" is what it says under the GD link.
Seems like this would be a prime place to post ideas of any... topic really, that's probably why people do.
Just my opinion, but i don't think it would be necessary to add another board.
Seconded, though ideas are on Feedback board.
[Edited by ArchDuke, 4/14/2013 4:24:45 AM]