I think any technique that increases your skills is a good idea, and your idea is one of them.
There is a distinct difference between archery and skiing, however. You can learn basic skills on the bunny slopes, but there are considerable additional skills you have to learn to ski the black diamonds. In archery, if you learn good form shooting at 5 feet, you don't have to change ANYTHING in your form to shoot well at 50 yards. In fact, I would guess that one of the problems people have is that they inadvertently DO change things when they shoot at 50 yards that they shouldn't be changing.
So since there are fewer things that change in archery when we move our shooting from five feet to 50 yards than change in skiing when we move from the bunny slopes to the black diamonds, archery should be easier to do, right? The problem is, the fear we have when we stand there with our skiis jutting out over the start of a black diamond run is the same fear we have when we look at a target 50 yards away and think that's a long way to hit anything with an arrow. In both cases, the fear causes our muscles to clinch and our brains to shut down, so we don't perform as well as we should be capable of doing.
Generalizing on your idea, it is much the same as Rod Jenkins's advice to go back to the blank bale if your shooting goes to pot at longer distances. Your idea adds the additional component of aiming at a distance short enough that you either have enough confidence, or few enough distractions, to shoot better than you were shooting at a longer distance.
Whatever it takes to do that is a good idea, whether it is your aimed shots at 10 yards, Rod's blank bale, or sometimes I just psych myself out by telling myself to pretend that I'm shooting like it was only 10 yards, even though it is 50.