People can always use Hack Requests forum if they want to hear suggestions and discuss the hack. If they posted in Service Request, this indicates their will to get "Professional Service" and thus there is no need for "free amateur advice" in the thread any more. Because even for very simple hacks and solutions a member might be after a professional service say because he has a professional board with no tolerance to downtime.
But members are welcomed to provide "free support" to such requests via email or PM.
If we allow the discussions there, it might be abused by advertisement posts or show offs in the thread.