G788 you're prescient .....well... nearly . Back in the early 90's I used to attend a lot of Tech. Conferences and College Courses related to Indusrtial Use of Lasers . At one of these I struck up a conversation with one of the attendees about long range shooting . We started talking about Scopes which did exactly what you are talking about . He said they already existed and that they even incorporated at least two more variables beyond those you mentioned . He would not tell me who was making them . When I said I would like to buy one , he laughed rather loudly . Said I had no chance for a variety of reasons ....one of which was the price : about $100K for the prototypes . I never heard any more about them .