I'm for everything possible to arrive at peace, but I don't think this Jewish evacuation will do the trick, not that I am necessarily for (or against) settlements either. In May of 1967 Israel was already at the "'67 border." So why did Egypt and allies threaten and provoke and mobilize troops, with Nasser claiming he'd crush Israel? Must be they hoped they could destroy the Israeli nation, not regain any yet-to-be lost territories.
Before June of 1967 the residents of the West Bank were under Jordanian authority, and those of Gaza under Egyptian. And the PLO was founded in 1964, when the "Palestinians" were either under Jordanian or Egyptian jurisdiction. So what exactly was the Palestinian Liberation Organization planning to regain from 1964 to 1967, exactly what lost territory? That of pre- June 1967 Israel?
After the June 1967 war Israel immediately offered to negotiate the return of territories for recognition of its basic right to exist. The Arab Khartoum response was the 3 noes - no peace with Israel, no negotiations with Israel, no recognition of Israel. So what could Israel do?
Very few settlements in the "unoccupied territories" were initiated until after the 1973 Yom Kippur war, and I think most Israelis would roll their eyes (or worse) if you told them it was for "Lebensraum." The thought after the bloody 1973 surprise attack (on Israel's most holy day, when all is shut down) was to seriously increase defensive depth for the nation. And that in the face of continued Arab rejection of direct negotiations. Even so, not too long later, Israel relinquished the Sinai in return for a cool peace with Egypt.
Sharon decided on the unilateral disengagement while Yasser Arafat was still the "Rais" (PA main man) and directing (in part anyway) the Intifada Al-Aksa. My take on that move by Sharon was to stress Arafat, by threatening to depart without negotiated settlements on issues like seaports, airports, border crossings, immigration, emigration, work permits in Israel, etc, etc. Then Arafat goes the way of all mankind, after Sharon has pushed so hard for the disengagement. In the meantime, Fatah went into disarray to some degree after Arafat's demise, and Hamas gained much popular support in Gaza. The present PA is weak, leaving Hamas a serious player. Sorry, Hamas won't be satisfied with '67 borders, nor '48 borders, nor proposed UN resolution 181 borders, nor Jewish Yeshuv community borders. So I don't see any long term peace here. Not till there is basic agreement by all parties, including Muslim clerics and their followers, that Israel of any small size has a right to exist.
Regards,
Cement