And casting such an "old" actor was both a blessing and a curse - they did their best to accomodate him but I do know that the whole thing demanded every last ounce of his strength. LeVar Burton even made a remark that, by the end of season 3's shooting, the entire rest of the TNG cast had to help Sir Patrick in various ways because he was struggling so much with everything (I absolutely cannot blame him, I'd crumble after two DAYS of shooting and he endured shooting two whole SEASONS back to back). Casting a much older actor in a leading role also comes with certain restrictions - they also had to accomodate the shooting schedule of the show because Sir Patrick gets too tired in the afternoons. So, they started extremely early in the mornings. Etc etc. You have to be willing to go to these extra lengths, and sadly, a lot of studios are not, and I'm not sure if casting Sir Patrick will pave the way for more shows like this, or if it even paved the way for casting an older actress for SNW - she's 70 and not the leading role, I therefore don't see any of the "accomodation issues" popping up that they had with Sir Patrick.