I agree with most of what you usually say Joe, but not over this. That said, I would not have started Miller for the reasons you state ie. too much at stake. However at some point late on in the game, we could debate the precise time, when it was clear to all and sundry that we weren't going to win or even draw the tie. Miller should have been introduced and given his first cap. Just 5 or 10 minutes. His first chance to play for the full team, play at a Hampden international, get used to the international stage, whatever. The lad could have beee told something along the lines of "The ties lost, just go out and savour the occasion." However that opportunity was missed due to a safety first risk averse manager.
Thats one of the reasons we haven't progressed at international level for decades and won't do so for years to come. Our youths are being mismanaged.