Maybe change it that if a plane with Paras/Falls get shot down, they drop where it was shot down and they loose 50% of their men.
+1
However I've seen a paratrooper plane get shot down and the paras still dropped. Did the Axis players just not shoot it down fast enough? I know for a fact that falls do get instakilled by AA if in the wrong place at the wrong time, but I've just never seen it happen to paratroopers.