Setting the generic to 0 is only half the work. And it will CTD your Sim if you do so. The thing is, the Sim needs at least 1 type of aircraft to be set to Generic. If you set them all to 0 the Sim will error out and crash to desktop because there’s no generic aircraft to choose from.
That’s why if you want to get rid of the generic and use the A320 you need to set the default Asobo A320 as the generic instead.
So any of your liveries, need to have an A320 livery that has the aircraft.cfg to use isAirTraffic=1 so that the Sim will use this as the generic traffic.
Just make sure all the liveries aircraft.cfg has a properly matching ICAO airline code, so that the Live Traffic can spawns with the matching livery to the flight number.
You can also replace the texture files in AirTraffic folders in the Asobo A320 folder to any A320 livery that you want. So that it stops using the blank yellow or green livery that it came up with and use the one you replaced instead. I place my Star, SkyTeam and OneWorld alliance liveries as the default A320 air traffic liveries. So when I’m looking at a live traffic flight number that doesn’t have a matching ICAO livery, it falls back to using the alliance instead.