I think integrating github issues here would actually divide the conversation. There are several people both currently active and in the past that have shown no particular interest for the direction discussions, they simply want to raise issues to be fixed and some of whom even submit the fixes themselves.
My concern, then, is that if any of the discussion around issues is made more difficult to find and follow, the level of interaction from the non-opinionated but technically minded portion of the community may decrease. I’d rather foster involvement for a bit.
It’s roughly the same argument for effectively killing off the google group that was set up as stop-gap so that people aren’t going to two places for discussion about the community and project itself.