Peter47
I agree. There is a big difference between the present (or rather soon to commence) MAN-LAX service by TCX and a year round daily (or at least 4x weekly) service by a mainstream airline.
I feel that with the correct feed from BE and some improved surface access it would be possible to run 4x weekly to LAX and SFO. The question is how that would work with airframes (it would take more than one and would need to be used elsewhere over the week) but that aside I feel both could be supportrd.
I feel differently on the CPT/JNB question. CPT seems to make much more sense as a leisure service but I doubt both could be supported year round due in part to the SA economy.