I have smoked aromatics most of my smoking life, since joining this forum I have expanded my taste to VA's, VaPer's, and recently Turkish tobaccos, Latakia forward tobacco appreciation still eludes me.
Having said that, a great number of aromatics make for a wonderful smoke for me. I have many blends of them in my cellar and have found (so far) in the past years when having opened one, it can be in a number of conditions depending on the blend and its state of moisture upon cellaring it. My experience with aromatics in my cellar has been that I have found one and only one to have been less than great when opening the jar and smoking it. It was pretty dry not near dust, but upon reconstituting was fine. I do believe over the long haul, in respect to the added flavorings, they meld quite a bit. But we are all different and also constantly learning in this area of the pipe tobacco story.
Many variables are at play here but it is my take that most aromatics do not suffer and may even improve (that some toppings meld or are more evenly absorbed, over time to me) when cellard.
Cellaring will not make a poor quality tobacco better anymore than a poor quality wine will improve with cellaring.