That's correct, any external store, payload, or weapon, will have its own attachment location relative to where it needs to attach on the pylon, and also it will be able to adjust its position and rotation offset as well. Launchers and targeting pods (e.g. LUA-17 or LAU M299) will be able to attach to the pylon, and the rocket, bomb or missile attach to that, and certain launchers will be able to rotate in pitch and yaw axis dynamically for targeting. Also, each pylon will have a loadout list, since only specific stores can mount to specific pylons. Once complete, it will be a fairly straight forward system, and fully compatible. The same system will also used for assembling rocket stages and spacecraft payloads.
Regards,
Uriah