I'm not sure what you are getting at, and I say that not in ignorance of procedural design rules, but with practical experience of the offshore IFR operating environment. The obstacle situation is quite dynamic and does not lend itself to any procedure that does not have an adequate means of obstacle avoidance in real time. Although there are are several WAAS and EGNOS procedures being looked at that allow very low minimum decision ranges from the destination, they do not in themselves provide the obstacle clearance assurances during the approach or missed aproach themselves - only from the destination.
The JAR OPS-3 ARA procedure is not well documented, I feel, when compared to the US equivelant - the OSAP. The following link gives some further details of the history and concepts behind the latter, if you are not already aware of them:
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/list/AC%2090-80B/$FILE/AC90-80B.pdf
You mention the SOAP Trials, so I assume you are familiar with this document?
http://www.caa.co.uk/docs/33/2010001.pdf