I know grain and grape have done these trials and I was told by them that they kept fresh wort kit for 2 years and it had no noticeable impact to flavour. I would have thought that some aroma would have been lost but they did not say this. I guess if you really want hop aroma it's still a good idea to dry hop anyway.
Also, would you guys be interested in us supplying bladders to use for fresh wort. The cubes are good but they are not always the right size and they are expensive to ship as they are so bulky. We can get the bladders made up suitable for hot filling and a 20L bladder would be about $2-3. This includes the cost of us getting the bladders irradiated. So you would get a bladder that is absolutely sterile when you fill. I think we could probably sell these as a pack of 10 bladders for under $2 each with screw cap. This would also be cheap enough that you could give a bladder of fresh wort to a friend and not worry about getting the cube back from them. Would be keen to get some feedback from you guys to see if this is a good idea or not.