Wejo, the letsrun forum is great, but whatever you do, don't make the mistakes that RW did when their forums imploded. That was sheer chaos (and still is).
Threading would be nice, but it's not essential.
Actually, what would be better is to delete all the religious and political threads that have nothing to do with running. It's like the pendulum has swung completely in the opposite direction. A few weeks ago, a few of your moderators were overzealous and deleted nearly everything. Now it seems that anything goes.
Delete the NRR threads and let them be posted on runango L&O or RW L&O. The running threads on here are great even though they often get buried under an avalanche of NRR threads.