Apparently there is a trend in the womens fashion industry, "Hemlines go up in a boom, down in a recession", fashion itself gets less daring in austere times. Since fragrance is so heavily connected to fashion, I don't expect something with the shock of the original A*Men any time soon. I would expect more 'safe' inoffensive scents for a few years, more Bulgari Man and Chanel Blu.
I agree though that the next noticable trend that will appear after this austere time will be based on a new chemical, one that is not as versatile as Iso E Super. Calone is not very versatile, you can only really make one type of fragrance with it.
Oh, and according to the Bo Jensen site, Calone is supposed to mimic the excretions of seaborne algae... no wonder I hate the smell of it!