As far as I know, noone has mentioned the possibility of enacting a Demilitiarized zone around the Palestinian settlements. You'd of course, need to demolish a 200 yard or so area, place a barrier, and defend it with sniper towers.
If palestinian suicide bombers couldn't reach israeli areas, wouldn't this negate their influence a great deal?
How much would israel be hurt if palestinians were excluded from israeli areas? Would the trade-off be worth the security?