I thought it was interesting that Lewis Polk announced the closing of Polk's Hobby but as far as I know he did not say anything about an Aristo-Craft closing.
It seems to me that there will continue to be a demand for maintenance items and perhaps Crest will be expanded. Crest happens to be the brand of Aristo smoke fluid.
IMHO Aristo is leaving too big a market for someone not to address it.
Jerry