To suppose the Jews should give up the lands given to them by the United Nations in 1948 decree is like saying .....
we should give California, Arizona and Texas to Mexico; (for truly absurd reasons).
According to history, the amount of land decreed for Israel was amended by giving some of it to Jordan; after the UN had already passed the decree, in 1947 (was it?). There is a definite basis for Israel having more land than they now possess. It is a constant and continuing battle to hold on to what land they have.
I like your ideas on this.