I think it would be immensely useful if Pagelines had a constantly updated list of plugins that have been confirmed to have conflicts with Pagelines. Possibly also include a list of Pagelines "approved" plugins as well.
The forum thread is ok, but not user friendly.
Beyond that, from a troubleshooting side, it seems like a compiled list may help isolate common issues that cause plugin conflicts. But what do I know? I am but a simple caveman.