I don't normaly read the ask a question forum but when I do what catches my eye are questions that should be on the plant ID forum which for me is a religion. So is there a way to migrate these to the ID forum? Or redirect them before they complete the process there?

yes, Dave usually does it when someone gives him a heads up. So just copy the thread and tag him. Sometimes he gets busy though and may not be able to check in right away so even if the thread gets it's ID before he drops it to the Plant ID Forum, it will eventually be moved so it can benefit others.