Reading in The Independent (serious UK newspaper): if it is still the case that this provides access from the US into Euro hubs and then elsewhere within Europe but does NOT provide onward access from US hubs, then it is no progress.
If as is reported this allows the US into Europe but not Europe into the USA, then it is not a good deal. We know from other areas such as food production, that the USA does not have the same understanding of the term 'open markets'.
If it is to be agreed that European carriers can land at JFK and then continue with the same a/c into the mid-west, for example, then we might be getting somewhere.
Also, does this draft allow the US carrier landing at LHR to pick up pax before going on to Prague? If so, then we must be able to pick up pax at JFK before going on to Kansas City (for a pair of towns plucked at random).