So, one of the important parts of the PBE is feedback. Most people on the PBE don't actually participate in bug hunts or reproduction, but are more looking to investigate content. However, I think more people would post on the forums if there was a direct link to the boards directly in the client itself.
Currently, the client mirrors the NA client outlook (When the LCS is on, the active frame advertises the LCS with a link). Why not make one of the active frames a permanent link to the boards? You'll have more people accessing the boards, hopefully increasing the ease of use, and making more information available. It could be a good idea!