Just searched JFK-VIE and within the AC/UA program OS doesn't even show up as an option. Also, are you planning to just show available classes for certain airlines?
Example: Turkish/Brussels/LOT/Austrian (when it is added) don't fly F but list a value for F. Would it not make more sense to take the value out so as to not indicate that there is F to be head with those?
Also, do you plan to add the SQ program to this? Would be very good to have that in there.