I have done a side-by-side comparison of unfiltered, quality, no sugar added apple juice fermented with low attenuating English Ale yeast, and then a second identical batch, except I reduced 2 pints of cider on the stove down to an apple caramel, and the latter proved to have a more robust apple quality. Both were 1 gallon experiments.
I admit, I was myself skeptical about boiling apple juice into a caramel because I thought that boiling would drive-off flavor or make some disgusting, bland, burnt apple goop. But quite the opposite happened. There was a noticeable caramel quality to the second batch, but there was also a richer (less watery), fuller flavored, apple character with a more balanced sweetness (not as dry as the regular cider).
Perhaps this was the key: I allowed a standard 1 gallon cider to ferment out over the course of about 2 weeks. Then, I made the apple caramel which I then diluted with another pint of apple juice. I dumped that mixture back into the already fermented 1 gallon of apple cider, and allowed to re-ferment for only four days, then bottled. I only bottle carbonated for four days, then placed this "apple caramel" cider into the refrigerator to prevent the yeast from tearing through any more of the apple sugars.
Bottom line was the apple caramel cider was clearly better and yielded those lost apple characteristics that seemed to be missing in the standard cider. And this may have been due to the fact that I refrigerated the cider possibly before the yeast had fully completed fermenting.
The only way you'll know is by doing a side-by-side and seeing if you notice a significant improved difference. I did.