A recent ABC online news article reported on a new cable car plan for Mt Roland.
Behind this headline it appears that the Kentish council commissioned a report to look at the possibility of establishing "an adventure hub, including mountain biking, camping and hiking" around Mt Roland. A quick read through the May 2011 Report, available from the Kentish Council website, shows that a mountain bike park is one of the three serious options recommended by the report.
In terms of looking for the ultimate win however, I liked this idea hidden away on page 91 in the appendices. It is attributed to a Cradle Coast Mountain Biking Club member: "Cable car: If this idea was progressed, bike hooks could be attached to the pods to tow bikes to the top, from where a downhill course could begin. This would be a world famous attraction".