[Nick Beale]

If it had been used at a low level (which was not permitted until - IIRC -December 1944) then I'm sure it would have improved the Luftwaffe's very limited daylight ground attack capability in the West.

A bomb sight is, as Graham has said, less important in that kind of attack. Also, the documents show that much (maybe most) of the time KG 51 was dropping AB 250 canisters, which are intended to blanket an area, not strike a specific point.

In the end though, there was no "right answer" for the Luftwaffe, the Third Reich had bitten off more than it could chew with the resources it had. They needed tactical support and they needed strategic air defence and they needed them on several fronts - and they did not have the means to provide all those things. Anything the German forces did to delay the end only brought them nearer to the day the first American nuclear weapon was ready for action, anyway.