is creating a wall that makes it harder for BTCto be a universal economic currency. Stores may take 1BTC for a product and in the AM that 1BTC could be valued at .08BTC. Obviously theres a ton of positives to this happening I think more than negatives. I for one hope it does though because USD is getting old 
i don't see anybody else mentioning this and i don't know if it is a typo or what but from 1BTC to 0.08BTC is a -92% drop and it is impossible to happen, i assure you.
if you mean a smaller drop like the 20% drop or something like that then i have to say such drops are rare, they don't happen everyday. they always happen after a fast rise or a huge FUD. other times bitcoin is pretty stable.
and also as it was mentioned a million times if "Stores" are worried about it they can exchange it for fiat as soon as they receive it.