Indeed, Christmas Cheer is not an aromatic. But regarding aromatics and ageing, this is from the Ask GL Pease section:
Another great query from Arno: On the Dutch forum we are having a discussion about the aging of aromatic tobaccos. A first I said that the used aromas have nothing to do with the aging process. It is all about the used tobaccos. You know, a lot of Virginias? The blend will improve by aging. A lot of Burley? The mixture will pretty much stay the same. But now I am having some second thoughts; do the sugars of the aromas do anything with the tobaccos when they age? So my question is: do the aromas that are used in a blend affect the aging process?
A: It’s a complicated question, Arno. In some cases, the really heavily sauced aromatics that are popular in the US, things probably aren’t likely to change much over time. These tobaccos often have quite a bit of Propylene Glycol in them as a humectant and carrier of their aromatic oils, and are mostly burley based, a sort of double-whammy when it comes to the finer subtleties of aging. In my own experiments with them, they’ve seemed pretty stable over quite a long time frame, the biggest change being some degradation of their aromatic characteristics. As far as burleys go, it’s not quite true that they don’t age, though they do so differently from virginias. Burleys become mellower over time, losing some of the astringency they can present when young. And, as I’ve often said, they have a sort of chameleon-like quality in that they take on the taste and aromas of the tobaccos that surround them over time, so their presence often becomes less noticeable as an isolated characteristic of the blend, instead, adding body and weight to the smoke, which can be a good thing.
As you suspect, a blend that is predominately based on virginias or other leaf that’s known to age well, with sauces that are delicately applied, and more natural flavorings, will still experience significant change due to long-term aging.
Another consideration is whether or not the aromatic components overshadow the tobaccos natural taste. If it does, the nuances gained during the aging process might be lost in the noise. Further, some aromatic components can degrade or change over time, so what you find in that tin five years hence may not be as pleasing as it is today. I think the best strategy would be to smoke heavily sauced aromatics in their youth, and devote the cellar space to more natural blends with fewer additives.