Sorry. The myth of the 'enclaves' has long been debunked. At the start of Camp David Israel's offer was similar to that, but by the time Arafat walked away they were offering a continuous state. Arafat's apologists try to pretend that the initial Israeli position was the final proposal, but the American negotiators, including Deniss Ross and Bill Clinton, have published the exact details of what the final offers were.
http://www.mideastweb.org/Rossmap_7_camp_david.gif
Arafat's refusal to accept a peace proposal has been well-documented, as has the fact that he planned the launch of the Second Intifada.
Israel's refusal to consider Sadat's proposal in 1971 was indeed a huge blunder. However, that was just 4 years after the famous 3 No's of Khartoum, in which the Arab states flatly rejected any neogitaions with, peace with, or recognition of Israel. And afterwards negotiations between Nasser and 2 successive Israeli governments resulted in a peace deal and the Israel withdrawal from the whole of the Sinai Peninsula, which is bigger than Israel, Gaza, and the West Bank combined. One missed opportunity which was followed by a final peace deal. Sadat was different from Nasser, and Israel should have realized that sooner.
The 2003 Geneva initiative is a slightly modified version of the Clinton parameters from 2000-2001 and was never an official plan presented by any side but by people who were not in any positions of power.
The only proposal from the Arab side for the complete end of the conflict is the 2002 Arab Peace Initiative, which effectively calls on Israel to commit suicide and came from the Arab League/Saudi Arabia, not the Palestinian Authority.
I have worked in the field of Middle Eastern studies for years now. I've seen the games both journalists and historians play. I have also seen things in Israel's history that many of it's supporters would like to deny or forget about. Actually, the people who like to pretend that Israel was some sort of socialist paradise until 1977 would like to forget about. Anyway, during archival research I came across a speech Sadat gave in Egypt in the 70s in which he stated that he did not want to see one more Egyptian soldier hurt in conflict with Israel. I understood at that moment why he reached out and made peace - beyond the geopolitical considerations of wanting to dump the Soviet Union. That's the sort of leader who is needed.