+ JFK (or any other US-destination to that matter) : I would not be surprised if American Airlines simply refuses an SNBA-operated Transatlantic flight.
SNBA currently has no intention to open any long haul American destination. I have been told several times that, IF a second direct flight will be added between the US and Belgium, that AA will operate it (this matches with your theory, Leon).
The advantage for SN is of course the risk: if the route fails, it's AA who will suffer most from the financial consequences.
SN also tries not to have blockspace agreements (they sell as much seats as they can sell, they don't buy for example 40 seats on every flight).
I think that JFK will likely be opened in the future, and operated by AA. Currently, no additional capacity is needed on the BRU-NYC flights, but an economical change (positive than) is expected from 2004/2005. Maybe, when everything gets better, we will see BRU-JFK from 2005?
Im allready go twice to New York with Delta!
You can fly better airlines if you make a connection (which is of course very nice for an aviation enthusiastic, the more connections the better). Why not BA via LHR, LH via FRA/MUC or UA via IAD? If you want to be creative, you can even fly TP via LIS to EWR for a very good price.
(If Virgin Atlantic comes to Brussels, il take them, they fly for low prizes to JFK)
Virgin Atlantic is no low cost. VS is a full service airline, just like BA. Compare their fares with the ones of BA, and you will see that both have on most routes the same (if one lowers the fares, the other follows immediately).
So VS in BRU does not necessarily mean much lower fares (VS is often very expensive).
Regards
Frederic