I thought it had been simplified to the Pickup Mission option.
 If that is the case then i will need to take the time to educate myself on it.  2 people last night were under the impression it was removed after i asked about it in-game and left me wondering with much doubt.  
When i used to play in the past it was as easy as select the plane, the fuel, the ords load out, gun package,  starting airbase to launch from and runway.  
I will follow up on this when I return home from my trip. Missions were important to me back then and last night rallying under a planned mission would have been useful for anyone interested.  Appreciate your response bustr and will check into it further