In my experience, scoping a bore will answer a lot of unanswered questions.
If I had not scoped the bore on the Savage that I was working on, I would have never seen the 10" long streak of copper that was plated on the bore. Also, I would not have seen the rough rifling that looks like a mill file but much smaller.
Also, scoping the bore will let you know if there are any anomalies in the bore that could not otherwise be seen. It also tells you if you have the bore clean and can differentiate what type of fouling is there.
So, you can not qualify your statement that scoping the bore is not going to tell you anything.
Ok, the OP is asking about solutions.
My answer was in context of that question, scoping is not going to tell you diddly squat if a barrel will shoot or not.
note that a Savage barrel is rough. So what? It does not stop them from shooting and all that tells you is what we know, Savage barrels are rough.
As such they are going to copper up some. So does removing that streak of copper get your gun to shoot better?
If so, then that's valuable. Otherwise its better to let the copper settle in as long as it does not take over the barrel.
It does not check how straight the barrel is.
It does not air gauge the barrel.
Its not like a pipeline pig that tells you how even the grove and lands are.
It can tell you if the bore is eroded.
It can tell you if you are getting the carbon out (and copper if that is a proven issue)