The Road Map had the sides nibbling their way towards the End Game and it never, ever got past Stage 1. The Saudi Plan is an attempt to do the opposite; to say, basically, we go straight to the End Game i.e. agree on what are the goals of the negotiations, and then negotiate towards those goals. Otherwise you simply get endless squabbling, with all sides trying to head the negotiations in different directions. So the *strict* answer to your question is that it is the latter, and that is the only way you are going to get ANYWHERE - as the Road Map demonstrated. But NOTE: the more contentious the issue, the more vague is the wording. The most contentious of all - refugees - is so vague that it amounts to the Saudis simply insisting that the issue be on the agenda. So the *practical* answer to your question is that it is more the former than the latter. That's diplomacy for you; it ain't easy, and it ain't straightforward. And that's why it is unclear to you.
UN: At least 1,332 Iraqis killed by violence in July (AP)
from the article: Arab leaders rule out amending Saudi proposal