I think Duckett will surprise you mate.TBF England has its players out here on Lions tours when the Ashes are on. They also play to their commensurate level in Aus domestic cricket - for example, Ben Duckett played second grade for Parramatta, which England fans are about to find out is very much his standard.
I'm not saying he's a top class opener who will go on to average mid 40's in tests but he's a step above some of the dross we've had recently.
It'll be tough for him this summer, any opener in England up against Cummings and Starc would find it tough, but I think he'll go on to have a decent test career, averaging mid to high 30's.
He's not as good as Khawaja but I'd have him over any of your other openers.